sourceBuilder = source.toBuilder(); } else { sourceBuilder.mergeFrom(source);
builder.mergeFromWithProto3Semantics(config); } else { builder.mergeFrom(config);
builder.mergeFromWithProto3Semantics(config); } else { builder.mergeFrom(config);
ConfigSource source2 = builder.build(); source = source.toBuilder().mergeFrom(source2).build();