fn main () {
protobuf_codegen::Codegen::new()
    // Use `protoc` parser, optional.
    .protoc()
    // All inputs and imports from the inputs must reside in `includes` directories.
    .include("src/protos")
    // Inputs must reside in some of include paths.
    .input("src/protos/gtfs-realtime.proto")
    // Specify output directory relative to Cargo output directory.
    .cargo_out_dir("protos")
    .run_from_script();

}