public InsertCommand::render() Implements
A CSS selector string. If the command is a response to a request from an #ajax form element then this value can be NULL.
The content for the matched element(s). Either a render array or an HTML string. Type: string|array
public InsertCommand::__construct($selector, $content, array $settings =
A settings array to be passed to any attached JavaScript behavior. Type:
Generic AJAX command for inserting content. This command instructs the client to insert the given HTML using whichever jQuery DOM manipulation