The unique idenfitier of the menu.
This is the hash key of the attributes which make up the composite key--- RegistryName and RoleName ---for the Menu Security Assignments resource and used to uniquely identify an instance of Menu Security Assignments. The client should not generate the hash key value. Instead, the client should query on the Menu Security Assignments collection resource with a filter on the primary key values in order to navigate to a specific instance of Menu Security Assignments.
For example: Securities?q=RegistryName=<value1>;RoleName=<value2>
No content. This task does not return elements in the response body.