class Kafka::Protocol::JoinGroupRequest

def encode(encoder)
  encoder.write_string(@group_id)
  encoder.write_int32(@session_timeout)
  encoder.write_string(@member_id)
  encoder.write_string(@protocol_type)
  encoder.write_array(@group_protocols) do |name, metadata|
    encoder.write_string(name)
    encoder.write_bytes(Encoder.encode_with(metadata))
  end
end