description: The minimum number of characters that must be present in the simple data type to be considered a \"valid\" instance. package_name: rs/hl7.fhir.core derivation: constraint name: minLength type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/minLength'} index: 1 valueInteger: {type: integer, index: 2} package_version: 3.5.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/minLength base: http://hl7.org/fhir/StructureDefinition/Extension version: null