Elgg\WidgetsService::unregisterType PHP Method

    public function unregisterType($id)
    {
        if (isset($this->widgets[$id])) {
            unset($this->widgets[$id]);
            return true;
        }
        return false;
    }

 /**
  * @depends testRegistrationParametersPreserveNameDescription
  * @param \Elgg\WidgetsService $service
  */
 public function testCanUnregisterType($service)
 {
     $this->assertTrue($service->unregisterType('widget_type'));
     $this->assertTrue($service->unregisterType('widget_type_con'));
     $this->assertTrue($service->unregisterType('widget_type_mul'));
     $this->assertTrue($service->unregisterType('widget_type_con_mul'));
     $this->assertFalse($service->unregisterType('widget_not_registered'));
     $this->assertFalse($service->validateType('widget_type'));
     $this->assertFalse($service->validateType('widget_type_con'));
     $this->assertFalse($service->validateType('widget_type_mul'));
     $this->assertFalse($service->validateType('not_registered_widget'));
 }