src/vs/workbench/contrib/mergeEditor/browser/model/mergeEditorModel.ts/MergeEditorModel/getState
class MergeEditorModel:	public getState(baseRange: ModifiedBaseRange): IObservable<ModifiedBaseRangeState> {
		const existingState = this.modifiedBaseRangeResultStates.get().get(baseRange);
		if (!existingState) {
			throw new BugIndicatingError('object must be from this instance');
		}
		return existingState.accepted;
	}