/**
  * Add the GridFieldAddExistingSearchButton component to this grid config.
  *
  * @return $this
  **/
 public function addExisting()
 {
     $classes = $this->blockManager->getBlockClasses();
     $this->addComponent($add = new GridFieldAddExistingSearchButton());
     $add->setSearchList(Block::get()->filter(array('ClassName' => array_keys($classes))));
     return $this;
 }
 /**
  * Add the GridFieldAddExistingSearchButton component to this grid config.
  *
  * @return $this
  **/
 public function addExisting()
 {
     $this->addComponent($add = new GridFieldAddExistingSearchButton());
     $add->setSearchList(Block::get());
     return $this;
 }
 /**
  * Add the GridFieldAddExistingSearchButton component to this grid config.
  *
  * @return $this
  **/
 public function addExisting()
 {
     // EDIT
     //$this->addComponent($add = new GridFieldAddExistingSearchButton());
     $this->addComponent($add = new GridFieldAddExistingSearchButton('buttons-after-right'));
     // /EDIT
     $add->setSearchList(Block::get());
     return $this;
 }