code: protected function __templates($customTemplate = null, $customTemplateSuffix = null) {
  		$templates = SSViewer::get_templates_by_class($this->class, $customTemplateSuffix, \FormField::class);
  		//$templates = \SSViewer::get_templates_by_class($this->class, '', __CLASS__);
  		if (!$templates) {
  			throw new \Exception("No template found for {$this->class}");
  		}
  		if($customTemplate) {
  			array_unshift($templates, $customTemplate);
  		}
  		return $templates;
  	}
docs: Generate an array of class name strings to use for rendering this form field into HTML.
  
  @param string $customTemplate
  @param string $customTemplateSuffix
  
  @return array