public function removeKey($field)
    {
        if($this->exists($field))
        {
            unset($this->__data[$field]);
            $this->invalidateKeycache();
        }
        return $this;
    }
public function removeKey($field)
    {
        if($this->exists($field))
        {
            unset($this->__data[$field]);
            $this->invalidateKeycache();
        }
        return $this;
    }
public function removeKey ( $ field ) { if ( $ this -> exists ( $ field ) ) { unset ( $ this -> __data [ $ field ] ) ; $ this -> invalidateKeycache ( ) ; } return $ this ; }
Remove field by name
@param mixed $field
@return \PerrysLambda\ArrayList
Remove field by name