src/vs/editor/browser/config/fontMeasurements.ts/FontMeasurementsImpl/_createRequest
class FontMeasurementsImpl:	private _createRequest(chr: string, type: CharWidthRequestType, all: CharWidthRequest[], monospace: CharWidthRequest[] | null): CharWidthRequest {
		const result = new CharWidthRequest(chr, type);
		all.push(result);
		if (monospace) {
			monospace.push(result);
		}
		return result;
	}