public function setArgument($argument, $position = null)
    {
        array_splice($this->arguments, $position ?: count($this->arguments), 0, array($argument));

        return $this;
    }
public function setArgument($argument, $position = null)
    {
        array_splice($this->arguments, $position ?: count($this->arguments), 0, array($argument));

        return $this;
    }
public function setArgument ( $ argument , $ position = null ) { array_splice ( $ this -> arguments , $ position ? : count ( $ this -> arguments ) , 0 , array ( $ argument ) ) ; return $ this ; }
Set a single instantiation argument.

@param  string  $argument
@param  int  $position
@return \Basset\Filter\Filter
Set a single instantiation argument .