public function stats($name = null) {
		if ($name) {
			return isset($this->_stats[$name]) ? $this->_stats[$name] : null;
		}
		return $this->_stats;
	}
public function stats($name = null) {
		if ($name) {
			return isset($this->_stats[$name]) ? $this->_stats[$name] : null;
		}
		return $this->_stats;
	}
public function stats ( $ name = null ) { if ( $ name ) { return isset ( $ this -> _stats [ $ name ] ) ? $ this -> _stats [ $ name ] : null ; } return $ this -> _stats ; }
Gets the stat or stats associated with this `Collection`.

@param string $name Stat name.
@return mixed Single stat if `$name` supplied, else all stats for this
`Collection`.
Gets the stat or stats associated with this Collection .