```
@Documented
@Retention(RUNTIME)
@Target({TYPE,FIELD,METHOD})
public @interface UML
```
An annotation mapping each interface, methods or fields to the UML identifier where they come from.

Since:

2.0

Required Element Summary

Required Elements
Modifier and Type	Required Element	Description
`String`	`identifier`	The UML identifier for the annotated interface, method or code list element.
`Specification`	`specification`	The specification where this UML come from.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`Obligation`	`obligation`	The obligation declared in the UML.
`short`	`version`	The version of the specification where this UML come from, or 0 for the default version.

- Element Detail
  - identifier
```
String identifier
```
    The UML identifier for the annotated interface, method or code list element. Scripts can use this identifier in order to maps a GeoAPI method to the UML entity where it come from.
    
    Returns:
    
    the UML identifier used in the standard.
- - specification
```
Specification specification
```
    The specification where this UML come from.
    
    Returns:
    
    the originating specification.
- - obligation
```
Obligation obligation
```
    The obligation declared in the UML. This metadata can be queried in order to determine if a null value is allowed for the annotated method or not. If the obligation is Obligation.MANDATORY, then null value are not allowed.
    
    Returns:
    
    the obligation declared in the standard.
    
    Default:
    
    org.opengis.annotation.Obligation.MANDATORY
- - version
```
short version
```
    The version of the specification where this UML come from, or 0 for the default version. The valid version numbers are listed in Specification enumeration constants.
    When older standard versions are used:
    The vast majority of non-deprecated GeoAPI methods leave UML.version() to its default value, meaning that the Specification default version (usually latest OGC/ISO version) is used. However there is a few exceptions when an older version of an OGC or ISO standard is preferred. Examples:
    
    ISO 19115:2003 defined PT_Locale in a way closer to the java.util.Locale model than the newer ISO 19115:2014.
    
    An ISO 19111 revision by OGC defined geographic and geocentric CRS in a more type-safe way than ISO 19111:2007. The later model requires C/C++ union construct for type-safety, which does not exist in the Java language.
    Returns:
    
    the specification version, or 0 for the default (usually latest) specification.
    
    Since:
    
    3.1
    
    See Also:
    
    Specification.defaultVersion()
    
    Default:
    
    0

Annotation Type UML

Required Element Summary

Optional Element Summary

Element Detail

identifier

specification

obligation

version