/**
  * @see Collection::contains() Collection::contains()
  */
 public function contains($element_)
 {
     return Arrays::containsValue($this->m_elements, $element_, Arrays::UNSORTED);
 }
 /**
  * @see \Components\Map::containsValue() containsValue
  */
 public function containsValue($value_)
 {
     return Arrays::containsValue($this->m_value, $value_, Arrays::UNSORTED);
 }