code: public static boolean contains(Object src, Object... dests) {
          if (dests == null) {
              throw new NullPointerException("dest must not be null");
          }
  
          if (src == null) {
              return false;
          }
  
          for (Object dest : dests) {
              if (src == dest || src.equals(dest)) {
                  return true;
              }
          }
          return false;
      }
docs: 判断指定数组dests中是否包含指定数据src
  @param src 数据
  @param dests 数组，不能为空
  @return 返回true表示dests中包含src