code: public boolean containsValue(final int value)
      {
          boolean found = false;
          if (value != initialValue)
          {
              final int[] entries = this.entries;
              @DoNotSub final int length = entries.length;
  
              for (@DoNotSub int i = 1; i < length; i += 2)
              {
                  if (value == entries[i])
                  {
                      found = true;
                      break;
                  }
              }
          }
  
          return found;
      }
docs: Iterate over the values to see if any match the provided value.
  <p>
  If value provided is {@link #initialValue()} then it will always return false.
  
  @param value the key to check.
  @return true if the map contains value as a mapped value, false otherwise.