src/vs/editor/browser/controller/mouseTarget.ts/MouseTarget/createOutsideEditor
class MouseTarget:	public static createOutsideEditor(mouseColumn: number, position: Position, outsidePosition: 'above' | 'below' | 'left' | 'right', outsideDistance: number): IMouseTargetOutsideEditor {
		return { type: MouseTargetType.OUTSIDE_EDITOR, element: null, mouseColumn, position, range: this._deduceRage(position), outsidePosition, outsideDistance };
	}