src/vs/editor/browser/controller/mouseTarget.ts/MouseTarget/_deduceRage
class MouseTarget:	private static _deduceRage(position: Position | null, range: EditorRange | null = null): EditorRange | null {
		if (!range && position) {
			return new EditorRange(position.lineNumber, position.column, position.lineNumber, position.column);
		}
		return range ?? null;
	}