src/vs/workbench/api/browser/mainThreadDocumentsAndEditors.ts/MainThreadDocumentsAndEditors/_toTextEditorAddData
class MainThreadDocumentsAndEditors:	private _toTextEditorAddData(textEditor: MainThreadTextEditor): ITextEditorAddData {
		const props = textEditor.getProperties();
		return {
			id: textEditor.getId(),
			documentUri: textEditor.getModel().uri,
			options: props.options,
			selections: props.selections,
			visibleRanges: props.visibleRanges,
			editorPosition: this._findEditorPosition(textEditor)
		};
	}