AssistantApiProtobuf

Also known as "Extensions Without Extensions" or "The Poor Man’s Any", this simple proto is used to transmit arbitrary protocol buffers over the wire. Unlike extensions: – It does not require the proto type to be compiled into the binary. (Useful so that the proto declaration can be inside the conversation package) – It is compatible with all versions of proto, including proto3 and the wack-tastic version used on ChromecastOS. Server libraries for dealing with it live in google3/assistant/protocol/protobuf_lib.h.