_sortable; } public function setSortable($sortable) { $this->_sortable = $sortable; return $this; } public function isRemovable() { return $this->_removable; } public function setRemovable($removable) { $this->_removable = $removable; return $this; } public function isNumerable() { return $this->_numerable; } public function setNumerable($numerable) { $this->_numerable = $numerable; return $this; } public function getOrientation() { return $this->_orientation; } public function setOrientation($orientation) { $this->_orientation = $orientation; return $this; } }