description: This cross-version extension represents Consent.except from http://hl7.org/fhir/StructureDefinition/Consent|3.0.2 for use in FHIR R4.
package_name: hl7.fhir.uv.xver-r3.r4
derivation: constraint
name: Ext_R3_Consent_except
type: Extension
elements:
  extension:
    base: {max: '*', min: 0, path: Extension.extension}
    array: true
    min: 1
    index: 0
    slicing:
      rules: closed
      ordered: false
      discriminator:
      - {path: url, type: value}
      min: 1
      slices:
        purpose:
          match: {url: purpose}
          schema:
            short: Context of activities covered by this exception
            array: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 34
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: purpose}
                index: 35
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: Context of activities covered by this exception
                choices: [valueCoding]
                index: 37
              valueCoding:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: Coding
                short: Context of activities covered by this exception
                choiceOf: value
                index: 38
            required: [url]
        dataPeriod:
          match: {url: dataPeriod}
          schema:
            short: Timeframe for data controlled by this exception
            base: {max: '*', min: 0, path: Extension.extension}
            index: 49
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: dataPeriod}
                index: 50
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: Timeframe for data controlled by this exception
                choices: [valuePeriod]
                index: 52
              valuePeriod:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: Period
                short: Timeframe for data controlled by this exception
                choiceOf: value
                index: 53
            required: [url]
        type:
          match: {url: type}
          schema:
            short: deny | permit
            _required: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 1
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: type}
                index: 2
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: deny | permit
                choices: [valueCode]
                index: 4
              valueCode:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: code
                short: deny | permit
                choiceOf: value
                index: 5
            required: [url]
        class:
          match: {url: class}
          schema:
            short: e.g. Resource Type, Profile, or CDA etc
            array: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 39
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: class}
                index: 40
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: e.g. Resource Type, Profile, or CDA etc
                choices: [valueCoding]
                index: 42
              valueCoding:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: Coding
                short: e.g. Resource Type, Profile, or CDA etc
                choiceOf: value
                index: 43
            required: [url]
        code:
          match: {url: code}
          schema:
            short: e.g. LOINC or SNOMED CT code, etc in the content
            array: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 44
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: code}
                index: 45
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: e.g. LOINC or SNOMED CT code, etc in the content
                choices: [valueCoding]
                index: 47
              valueCoding:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: Coding
                short: e.g. LOINC or SNOMED CT code, etc in the content
                choiceOf: value
                index: 48
            required: [url]
        action:
          match: {url: action}
          schema:
            short: Actions controlled by this exception
            array: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 24
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: action}
                index: 25
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: Actions controlled by this exception
                choices: [valueCodeableConcept]
                index: 27
              valueCodeableConcept:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: CodeableConcept
                short: Actions controlled by this exception
                choiceOf: value
                index: 28
            required: [url]
        period:
          match: {url: period}
          schema:
            short: Timeframe for this exception
            base: {max: '*', min: 0, path: Extension.extension}
            index: 6
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: period}
                index: 7
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: Timeframe for this exception
                choices: [valuePeriod]
                index: 9
              valuePeriod:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: Period
                short: Timeframe for this exception
                choiceOf: value
                index: 10
            required: [url]
        securityLabel:
          match: {url: securityLabel}
          schema:
            short: Security Labels that define affected resources
            array: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 29
            elements:
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: securityLabel}
                index: 30
              value:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                short: Security Labels that define affected resources
                choices: [valueCoding]
                index: 32
              valueCoding:
                base: {max: '1', min: 0, path: 'Extension.value[x]'}
                type: Coding
                short: Security Labels that define affected resources
                choiceOf: value
                index: 33
            required: [url]
        actor:
          match: {url: actor}
          schema:
            short: Who|what controlled by this exception (or group, by role)
            array: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 11
            extensions:
              role:
                url: role
                short: How the actor is involved
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 13
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: role}
                    index: 14
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: How the actor is involved
                    choices: [valueCodeableConcept]
                    index: 16
                  valueCodeableConcept:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: CodeableConcept
                    short: How the actor is involved
                    choiceOf: value
                    index: 17
                required: [url]
              reference:
                url: reference
                short: Resource for the actor (or group, by role)
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 18
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: reference}
                    index: 19
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: Resource for the actor (or group, by role)
                    choices: [valueReference]
                    index: 21
                  valueReference:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: Reference
                    short: Resource for the actor (or group, by role)
                    choiceOf: value
                    index: 22
                required: [url]
            elements:
              extension:
                base: {max: '*', min: 0, path: Extension.extension}
                array: true
                min: 2
                index: 12
                slicing:
                  rules: closed
                  ordered: false
                  discriminator:
                  - {path: url, type: value}
                  min: 2
                  slices:
                    role:
                      match: {url: role}
                      schema:
                        short: How the actor is involved
                        _required: true
                        base: {max: '*', min: 0, path: Extension.extension}
                        index: 13
                        elements:
                          url:
                            base: {max: '1', min: 1, path: Extension.url}
                            pattern: {type: Uri, value: role}
                            index: 14
                          value:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            short: How the actor is involved
                            choices: [valueCodeableConcept]
                            index: 16
                          valueCodeableConcept:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            type: CodeableConcept
                            short: How the actor is involved
                            choiceOf: value
                            index: 17
                        required: [url]
                    reference:
                      match: {url: reference}
                      schema:
                        short: Resource for the actor (or group, by role)
                        _required: true
                        base: {max: '*', min: 0, path: Extension.extension}
                        index: 18
                        elements:
                          url:
                            base: {max: '1', min: 1, path: Extension.url}
                            pattern: {type: Uri, value: reference}
                            index: 19
                          value:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            short: Resource for the actor (or group, by role)
                            choices: [valueReference]
                            index: 21
                          valueReference:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            type: Reference
                            short: Resource for the actor (or group, by role)
                            choiceOf: value
                            index: 22
                        required: [url]
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: actor}
                index: 23
            required: [url]
        data:
          match: {url: data}
          schema:
            short: Data controlled by this exception
            array: true
            base: {max: '*', min: 0, path: Extension.extension}
            index: 54
            extensions:
              meaning:
                url: meaning
                short: instance | related | dependents | authoredby
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 56
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: meaning}
                    index: 57
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: instance | related | dependents | authoredby
                    choices: [valueCode]
                    index: 59
                  valueCode:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: code
                    short: instance | related | dependents | authoredby
                    choiceOf: value
                    index: 60
                required: [url]
              reference:
                url: reference
                short: The actual data reference
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 61
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: reference}
                    index: 62
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: The actual data reference
                    choices: [valueReference]
                    index: 64
                  valueReference:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: Reference
                    short: The actual data reference
                    choiceOf: value
                    index: 65
                required: [url]
            elements:
              extension:
                base: {max: '*', min: 0, path: Extension.extension}
                array: true
                min: 2
                index: 55
                slicing:
                  rules: closed
                  ordered: false
                  discriminator:
                  - {path: url, type: value}
                  min: 2
                  slices:
                    meaning:
                      match: {url: meaning}
                      schema:
                        short: instance | related | dependents | authoredby
                        _required: true
                        base: {max: '*', min: 0, path: Extension.extension}
                        index: 56
                        elements:
                          url:
                            base: {max: '1', min: 1, path: Extension.url}
                            pattern: {type: Uri, value: meaning}
                            index: 57
                          value:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            short: instance | related | dependents | authoredby
                            choices: [valueCode]
                            index: 59
                          valueCode:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            type: code
                            short: instance | related | dependents | authoredby
                            choiceOf: value
                            index: 60
                        required: [url]
                    reference:
                      match: {url: reference}
                      schema:
                        short: The actual data reference
                        _required: true
                        base: {max: '*', min: 0, path: Extension.extension}
                        index: 61
                        elements:
                          url:
                            base: {max: '1', min: 1, path: Extension.url}
                            pattern: {type: Uri, value: reference}
                            index: 62
                          value:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            short: The actual data reference
                            choices: [valueReference]
                            index: 64
                          valueReference:
                            base: {max: '1', min: 0, path: 'Extension.value[x]'}
                            type: Reference
                            short: The actual data reference
                            choiceOf: value
                            index: 65
                        required: [url]
              url:
                base: {max: '1', min: 1, path: Extension.url}
                pattern: {type: Uri, value: data}
                index: 66
            required: [url]
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-Consent.except'}
    index: 67
package_version: 0.0.1-snapshot-2
extensions:
  purpose:
    url: purpose
    short: Context of activities covered by this exception
    array: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 34
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: purpose}
        index: 35
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: Context of activities covered by this exception
        choices: [valueCoding]
        index: 37
      valueCoding:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: Coding
        short: Context of activities covered by this exception
        choiceOf: value
        index: 38
    required: [url]
  dataPeriod:
    url: dataPeriod
    short: Timeframe for data controlled by this exception
    base: {max: '*', min: 0, path: Extension.extension}
    index: 49
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: dataPeriod}
        index: 50
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: Timeframe for data controlled by this exception
        choices: [valuePeriod]
        index: 52
      valuePeriod:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: Period
        short: Timeframe for data controlled by this exception
        choiceOf: value
        index: 53
    required: [url]
  type:
    url: type
    short: deny | permit
    _required: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 1
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: type}
        index: 2
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: deny | permit
        choices: [valueCode]
        index: 4
      valueCode:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: code
        short: deny | permit
        choiceOf: value
        index: 5
    required: [url]
  class:
    url: class
    short: e.g. Resource Type, Profile, or CDA etc
    array: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 39
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: class}
        index: 40
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: e.g. Resource Type, Profile, or CDA etc
        choices: [valueCoding]
        index: 42
      valueCoding:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: Coding
        short: e.g. Resource Type, Profile, or CDA etc
        choiceOf: value
        index: 43
    required: [url]
  code:
    url: code
    short: e.g. LOINC or SNOMED CT code, etc in the content
    array: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 44
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: code}
        index: 45
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: e.g. LOINC or SNOMED CT code, etc in the content
        choices: [valueCoding]
        index: 47
      valueCoding:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: Coding
        short: e.g. LOINC or SNOMED CT code, etc in the content
        choiceOf: value
        index: 48
    required: [url]
  action:
    url: action
    short: Actions controlled by this exception
    array: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 24
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: action}
        index: 25
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: Actions controlled by this exception
        choices: [valueCodeableConcept]
        index: 27
      valueCodeableConcept:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: CodeableConcept
        short: Actions controlled by this exception
        choiceOf: value
        index: 28
    required: [url]
  period:
    url: period
    short: Timeframe for this exception
    base: {max: '*', min: 0, path: Extension.extension}
    index: 6
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: period}
        index: 7
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: Timeframe for this exception
        choices: [valuePeriod]
        index: 9
      valuePeriod:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: Period
        short: Timeframe for this exception
        choiceOf: value
        index: 10
    required: [url]
  securityLabel:
    url: securityLabel
    short: Security Labels that define affected resources
    array: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 29
    elements:
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: securityLabel}
        index: 30
      value:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        short: Security Labels that define affected resources
        choices: [valueCoding]
        index: 32
      valueCoding:
        base: {max: '1', min: 0, path: 'Extension.value[x]'}
        type: Coding
        short: Security Labels that define affected resources
        choiceOf: value
        index: 33
    required: [url]
  actor:
    url: actor
    short: Who|what controlled by this exception (or group, by role)
    array: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 11
    extensions:
      role:
        url: role
        short: How the actor is involved
        _required: true
        base: {max: '*', min: 0, path: Extension.extension}
        index: 13
        elements:
          url:
            base: {max: '1', min: 1, path: Extension.url}
            pattern: {type: Uri, value: role}
            index: 14
          value:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            short: How the actor is involved
            choices: [valueCodeableConcept]
            index: 16
          valueCodeableConcept:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            type: CodeableConcept
            short: How the actor is involved
            choiceOf: value
            index: 17
        required: [url]
      reference:
        url: reference
        short: Resource for the actor (or group, by role)
        _required: true
        base: {max: '*', min: 0, path: Extension.extension}
        index: 18
        elements:
          url:
            base: {max: '1', min: 1, path: Extension.url}
            pattern: {type: Uri, value: reference}
            index: 19
          value:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            short: Resource for the actor (or group, by role)
            choices: [valueReference]
            index: 21
          valueReference:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            type: Reference
            short: Resource for the actor (or group, by role)
            choiceOf: value
            index: 22
        required: [url]
    elements:
      extension:
        base: {max: '*', min: 0, path: Extension.extension}
        array: true
        min: 2
        index: 12
        slicing:
          rules: closed
          ordered: false
          discriminator:
          - {path: url, type: value}
          min: 2
          slices:
            role:
              match: {url: role}
              schema:
                short: How the actor is involved
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 13
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: role}
                    index: 14
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: How the actor is involved
                    choices: [valueCodeableConcept]
                    index: 16
                  valueCodeableConcept:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: CodeableConcept
                    short: How the actor is involved
                    choiceOf: value
                    index: 17
                required: [url]
            reference:
              match: {url: reference}
              schema:
                short: Resource for the actor (or group, by role)
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 18
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: reference}
                    index: 19
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: Resource for the actor (or group, by role)
                    choices: [valueReference]
                    index: 21
                  valueReference:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: Reference
                    short: Resource for the actor (or group, by role)
                    choiceOf: value
                    index: 22
                required: [url]
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: actor}
        index: 23
    required: [url]
  data:
    url: data
    short: Data controlled by this exception
    array: true
    base: {max: '*', min: 0, path: Extension.extension}
    index: 54
    extensions:
      meaning:
        url: meaning
        short: instance | related | dependents | authoredby
        _required: true
        base: {max: '*', min: 0, path: Extension.extension}
        index: 56
        elements:
          url:
            base: {max: '1', min: 1, path: Extension.url}
            pattern: {type: Uri, value: meaning}
            index: 57
          value:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            short: instance | related | dependents | authoredby
            choices: [valueCode]
            index: 59
          valueCode:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            type: code
            short: instance | related | dependents | authoredby
            choiceOf: value
            index: 60
        required: [url]
      reference:
        url: reference
        short: The actual data reference
        _required: true
        base: {max: '*', min: 0, path: Extension.extension}
        index: 61
        elements:
          url:
            base: {max: '1', min: 1, path: Extension.url}
            pattern: {type: Uri, value: reference}
            index: 62
          value:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            short: The actual data reference
            choices: [valueReference]
            index: 64
          valueReference:
            base: {max: '1', min: 0, path: 'Extension.value[x]'}
            type: Reference
            short: The actual data reference
            choiceOf: value
            index: 65
        required: [url]
    elements:
      extension:
        base: {max: '*', min: 0, path: Extension.extension}
        array: true
        min: 2
        index: 55
        slicing:
          rules: closed
          ordered: false
          discriminator:
          - {path: url, type: value}
          min: 2
          slices:
            meaning:
              match: {url: meaning}
              schema:
                short: instance | related | dependents | authoredby
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 56
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: meaning}
                    index: 57
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: instance | related | dependents | authoredby
                    choices: [valueCode]
                    index: 59
                  valueCode:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: code
                    short: instance | related | dependents | authoredby
                    choiceOf: value
                    index: 60
                required: [url]
            reference:
              match: {url: reference}
              schema:
                short: The actual data reference
                _required: true
                base: {max: '*', min: 0, path: Extension.extension}
                index: 61
                elements:
                  url:
                    base: {max: '1', min: 1, path: Extension.url}
                    pattern: {type: Uri, value: reference}
                    index: 62
                  value:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    short: The actual data reference
                    choices: [valueReference]
                    index: 64
                  valueReference:
                    base: {max: '1', min: 0, path: 'Extension.value[x]'}
                    type: Reference
                    short: The actual data reference
                    choiceOf: value
                    index: 65
                required: [url]
      url:
        base: {max: '1', min: 1, path: Extension.url}
        pattern: {type: Uri, value: data}
        index: 66
    required: [url]
class: extension
kind: complex-type
url: http://hl7.org/fhir/3.0/StructureDefinition/extension-Consent.except
base: http://hl7.org/fhir/StructureDefinition/Extension|4.0.1
version: 0.0.1-snapshot-2
required: [url, extension]