[dist4]message_header // num_bytes
[u4]2 // version
[u4]0 // interface ID
[u4]2 // name
[u4]0 // flags
[u4]0 // padding
[u8]0 // request_id
[dist8]payload
[u8]0 // payload_interface_ids: This array is a nullable field.
[anchr]message_header
[anchr]payload
[dist4]method2_params // num_bytes
[u4]0 // version
[u4]0xFFFFFFFF // associated interface pointer: Invalid interface ID
// index.
[u4]1 // associated interface pointer: version
[anchr]method2_params