UML

```
@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

Version:

3.0

Required Element Summary

Required Elements
Modifier and Type	Required Element	Description
`java.lang.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.

- Element Detail
  - identifier
```
java.lang.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