src/vs/platform/userDataSync/common/keybindingsMerge.ts/addKeybindings
function addKeybindings(content: string, keybindings: IUserFriendlyKeybinding[], formattingOptions: FormattingOptions): string {
	for (const keybinding of keybindings) {
		content = contentUtil.edit(content, [-1], keybinding, formattingOptions);
	}
	return content;
}