key

provides an externally-defined means of identifying the entity (or
entities) being named, using a coded value of some kind.

Attribute Information

Used By

Source

<xs:attribute name="key" type="xs:string">
  <xs:annotation>
    <xs:documentation>provides an externally-defined means of identifying the entity (or entities) being named, using a coded value of some kind.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample