src/vs/workbench/api/common/extHostTextEditor.ts/TextEditorEdit/delete
class TextEditorEdit:	delete(location: Range | Selection): void {
		this._throwIfFinalized();
		let range: Range | null = null;

		if (location instanceof Range) {
			range = location;
		} else {
			throw new Error('Unrecognized location');
		}

		this._pushEdit(range, null, true);
	}