If the embedded message type is well-known and has a custom JSON representation,that representation will be embedded adding a field value which holds thecustom JSON in addition to the @type field. Example (for messagegoogle.protobuf.Duration):
The major version is also reflected in the package name of the API,which must end in v, as ingoogle.feature.v1. For major versions 0 and 1, the suffixcan be omitted. Zero major versions must only be used forexperimental, none-GA apis. 041b061a72