public function setIsSystem($value)
    {
        assert(null === $value || is_bool($value));
        $this->_isSystem = $value;
    }
public function setIsSystem($value)
    {
        assert(null === $value || is_bool($value));
        $this->_isSystem = $value;
    }
public function setIsSystem ( $ value ) { assert ( null === $ value || is_bool ( $ value ) ) ; $ this -> _isSystem = $ value ; }
Set the isSystem value

@param bool $value - isSystem: false->user collection, true->system collection

@return void
Set the isSystem value