description: Indicates that the value of the parameter is an empty list. Because the parameter element of a Parameters resource must have a value, the value element must be present with either an actual value, or an extension, this extension supports the case when the actual parameter value being represented is an empty list. The type of the value element used should be appropriate to the element type of the list-valued expression.
package_name: hl7.fhir.uv.extensions
derivation: constraint
name: IsEmptyList
type: Extension
elements:
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/cqf-isEmptyList'}
    index: 0
  value:
    pattern: {type: Boolean, value: true}
    choices: [valueBoolean]
    index: 2
  valueBoolean:
    type: boolean
    pattern: {type: Boolean, value: true}
    choiceOf: value
    index: 3
package_version: 5.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/cqf-isEmptyList
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.1.0
required: [value, valueBoolean]