description: This extension is used in logical models to indicate that the type that can be the container of this definition. This can be a reference to an abstract definition, or a particular concrete definition. This is the (base) class encountered when %resource and %rootResource is found in FHIRPath constraint expressions. package_name: hl7.fhir.uv.tools derivation: constraint name: LogicalContainer type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/tools/StructureDefinition/logical-container'} type: uri index: 1 value: choices: [valueUri] index: 3 valueUri: {type: uri, choiceOf: value, index: 4} package_version: 0.6.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/tools/StructureDefinition/logical-container base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.6.0 required: [value, valueUri]