NullableAnyURI¶
Overview¶
Abstract data type
A Uniform Resource Identifier (URI), or a null value. NullableAnyURI is abstract and has two concrete subtypes:
- an AnyURI is an actual value for a Uniform Resource Identifier (URI); 
- a NullAnyURI is a null value that explicitly indicates the absence of a Uniform Resource Identifier (URI). 
Subtypes
Implementation in Proteus Schema
The Proteus Schema implementation of NullableAnyURI depends on the Proteus Schema implementations of the data attributes with type NullableAnyURI.
- NullableAnyURI is the type of the AttributeURI attribute of CustomAttribute. See Proteus Schema implementation of AttributeURI. 
- NullableAnyURI is the type of the TypeURI attribute of CustomObject. See Proteus Schema implementation of TypeURI.