src/vs/editor/common/languages.ts/isLocationLink
export function isLocationLink(thing: any): thing is LocationLink {
	return thing
		&& URI.isUri((thing as LocationLink).uri)
		&& Range.isIRange((thing as LocationLink).range)
		&& (Range.isIRange((thing as LocationLink).originSelectionRange) || Range.isIRange((thing as LocationLink).targetSelectionRange));
}