public function setTemplate($template, array $template_variables = [])
	{
		$this->template = $template;
		$this->template_variables = $template_variables;

		return $this;
	}
public function setTemplate($template, array $template_variables = [])
	{
		$this->template = $template;
		$this->template_variables = $template_variables;

		return $this;
	}
public function setTemplate ( $ template , array $ template_variables = [ ] ) { $ this -> template = $ template ; $ this -> template_variables = $ template_variables ; return $ this ; }
Column may have its own template
@param string $template
Column may have its own template