GaxGrpcProperties { public static String getGrpcVersion() { return GRPC_VERSION; } private  GaxGrpcProperties(); static String getGrpcVersion(); static String getGrpcTokenName(); static String getGaxGrpcVersion(); static Pattern getDefaultApiClientHeaderPattern();  }
@Test public void testGrpcVersion() { String grpcVersion = GaxGrpcProperties.getGrpcVersion(); assertTrue(Pattern.compile("^\\d+\\.\\d+\\.\\d+").matcher(grpcVersion).find()); }