testSchemaHandlerForMessage()

Message: tests.core.protobuf.Data{str: java.lang.String, i32: int, u64: long, f32: int, f64: long, sf32: int, sf64: long, sint32: int, sint64: long, bytes: com.google.protobuf.ByteString, bool: boolean, float: float, double: double, siMap: java.util.Map<java.lang.String, java.lang.Integer>, iList: java.util.List<java.lang.Integer>, strList: java.util.List<java.lang.String>, xEnum: tests.core.protobuf.xEnum}