/**
  * @inheritdoc
  */
 public function operationAvailable($op)
 {
     if ($op === 'edit') {
         return true;
     }
     return parent::operationAvailable($op);
 }
 /**
  * Test Resource::operationAvailable().
  */
 public function testOperationAvailable()
 {
     $this->assertTrue($this->resource->operationAvailable('operate'));
     $this->assertFalse($this->resource->operationAvailable('nonexistent'));
 }