def METHOD_NAME(event_name, user_name):
	DocumentFollow = DocType("Document Follow")
	return (
		frappe.qb.from_(DocumentFollow)
		.where(DocumentFollow.ref_doctype == "Event")
		.where(DocumentFollow.ref_docname == event_name)
		.where(DocumentFollow.user == user_name)
		.select(DocumentFollow.name)
	).run()