public boolean containsValue(Object value) {
    EntryImpl<K, V> entry = _mapFirst;
    while (entry != null) {
      if (value.equals(entry._value)) { return true; }
      entry = entry._after;
    }
    return false;
  }
public boolean containsValue ( Object value ) { EntryImpl < K , V > entry = _mapFirst ; while ( entry != null ) { if ( value . equals ( entry . _value ) ) { return true ; } entry = entry . _after ; } return false ; }
Indicates if this {@link FastMap} maps one or more keys to the
specified value.

@param value the value whose presence in this map is to be tested.
@return <code>true</code> if this map maps one or more keys to the
specified value.
@throws NullPointerException if the key is <code>null</code>.