src/vs/editor/browser/config/editorConfiguration.ts/EditorConfiguration/setModelLineCount
class EditorConfiguration:	public setModelLineCount(modelLineCount: number): void {
		const lineNumbersDigitCount = digitCount(modelLineCount);
		if (this._lineNumbersDigitCount === lineNumbersDigitCount) {
			return;
		}
		this._lineNumbersDigitCount = lineNumbersDigitCount;
		this._recomputeOptions();
	}