Output only. The resource name of the key. The name has the form: projects/<PROJECT_NUMBER>/locations/global/keys/<KEY_ID>. For example: projects/123456867718/locations/global/keys/b7ff1f9f-8275-410a-94dd-3855ee9b5dd2
NOTE: Key is a global resource; hence the only supported value for location is global.
The field mask specifies which fields to be updated as part of this request. All other fields are ignored. Mutable fields are: displayName, restrictions, and annotations. If an update mask is not provided, the service treats it as an implied mask equivalent to all allowed fields that are set on the wire. If the field mask has a special value "*", the service treats it equivalent to replace all allowed mutable fields.
This is a comma-separated list of fully qualified names of fields. Example: "user.displayName,photo".