src/vs/workbench/api/common/extHostNotebookEditors.ts/ExtHostNotebookEditors/createNotebookEditorDecorationType
class ExtHostNotebookEditors:	createNotebookEditorDecorationType(options: vscode.NotebookDecorationRenderOptions): vscode.NotebookEditorDecorationType {
		return new NotebookEditorDecorationType(this._extHostRpc.getProxy(MainContext.MainThreadNotebookEditors), options).value;
	}