code: public void setLong(Enum<?> key, long value)
      {
          if (key == null)
          {
              return;
          }
  
          setLong(key.name(), value);
      }
docs: Equivalent to {@link #setLong(String, long)
  setLong}{@code (key.name(), value)}.
  If {@code key} is null, nothing is done.