src/vs/workbench/contrib/mergeEditor/browser/model/lineRange.ts/LineRange/getLines
class LineRange:	public getLines(model: ITextModel): string[] {
		const result = new Array(this.lineCount);
		for (let i = 0; i < this.lineCount; i++) {
			result[i] = model.getLineContent(this.startLineNumber + i);
		}
		return result;
	}