src/vs/workbench/contrib/mergeEditor/browser/view/viewModel.ts/MergeEditorViewModel/getRange
class MergeEditorViewModel:	private getRange(editor: CodeEditorView, modifiedBaseRange: ModifiedBaseRange, reader: IReader | undefined): LineRange {
		if (editor === this.resultCodeEditorView) {
			return this.model.getRangeInResult(modifiedBaseRange.baseRange, reader);
		} else {
			const input = editor === this.inputCodeEditorView1 ? 1 : 2;
			return modifiedBaseRange.getInputRange(input);
		}
	}