BackboneElement

complex type

Base StructureDefinition for BackboneElement Type: Base definition for all elements that are defined inside a resource - but not those in a data type.

Official spec
PathCard.TypeDescription & Constraints
BackboneElement0..*Base for elements defined inside a resource
.id0..1StringUnique id for inter-element referencing
.extension0..*ExtensionAdditional content defined by implementations
.modifierExtension?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized