public abstract void document_open (JsRender.JsRender file) ;
public abstract async void document_save (JsRender.JsRender file);
public abstract void document_close (JsRender.JsRender file);
public abstract void document_open (JsRender.JsRender file) ;
public abstract async void document_save (JsRender.JsRender file);
public abstract void document_close (JsRender.JsRender file);