Ocaml_protoc_compiler_lib.Pb_optionSourceProtobuf File/Message/Field options
Protobuf constance
As defined in: Protobuf Language Spec.
Option identifier
Collection of options
Can be used for field/message or file options
merge s1 s2 adds all the options from s2 to s1. This means than in case of duplicates s2 options will override s1 options.