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

Path	Card.	Type	Description & Constraints
BackboneElement	0..*	—	Base for elements defined inside a resource
.id	0..1	String	Unique id for inter-element referencing
.extension	0..*	Extension	Additional content defined by implementations
.modifierExtension?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized