-bool pb_decode_varint32(pb_istream_t *stream, uint32_t *dest);
-bool pb_decode_varint64(pb_istream_t *stream, uint64_t *dest);
+bool pb_decode_tag(pb_istream_t *stream, pb_wire_type_t *wire_type, uint32_t *tag, bool *eof);
+bool pb_skip_field(pb_istream_t *stream, pb_wire_type_t wire_type);
+
+bool pb_decode_varint(pb_istream_t *stream, uint64_t *dest);