src/vs/editor/contrib/inlineCompletions/ghostTextWidget.ts/AdditionalLinesWidget/clear
class AdditionalLinesWidget:	public clear(): void {
		this.editor.changeViewZones((changeAccessor) => {
			if (this._viewZoneId) {
				changeAccessor.removeZone(this._viewZoneId);
				this._viewZoneId = undefined;
			}
		});
	}