Returns the message api key number.

Receive a binary in the kafka wire format and deserialize it into a map.

Response content fields:

• response_data: The embedded response header and data. (bytes | versions 0+)

• error_code: The error code, or 0 if there was no error. (int16 | versions 0+)

Returns the current max supported version of this message.

Returns the current min supported version of this message.

Receives a map and serialize it to kafka wire format of the given version.

Input content fields:

• request_data: The embedded request header and data. (bytes | versions 0+)

• request_principal: Value of the initial client principal when the request is redirected by a broker. (bytes | versions 0+)

• client_host_address: The original client's address in bytes. (bytes | versions 0+)