option (toplevel_1) = 10; package My; option (toplevel_2) = "Hello world!"; message Test { optional string name = 1 [default="Max"]; optional string desc1 = 2 [default="Shouldn't mix quotes"]; optional string desc2 = 3 [default='Shouldn"t mix quotes']; optional string desc3 = 4 [(foo_options) = { opt1: 123 opt2: "baz" }]; optional string desc4 = 5 [(foo_options) = {options { opt1: 1234 opt2: "baz" } options { opt1: 4321 opt2: "foo" }} ]; option (inmessage) = My.Test; option (foo.my_option).bar = false; }