Note that two schemas are provided for each Entity:
Schema (returned by GET operation): This is the full schema, that specifies the Entity returned by a GET method;
Schema (used to Create or Update Entity): This is the schema used by the Owning Authority to Create or Update an Entity. The following attributes (which are present in the full schema) are omitted from this schema:
authority: always omitted, as this is implied by which ever authority calls the method;
any elements already present in the URL are also omitted (to avoid duplication); e.g. earbrand is omitted from Dog.
Dog: name, dna, studsire are omitted, as these can only be set by GA.
