src/vs/editor/common/viewLayout/linesLayout.ts/LinesLayout/getVerticalOffsetAfterLineNumber
class LinesLayout:	public getVerticalOffsetAfterLineNumber(lineNumber: number, includeViewZones = false): number {
		this._checkPendingChanges();
		lineNumber = lineNumber | 0;
		const previousLinesHeight = this._lineHeight * lineNumber;
		const previousWhitespacesHeight = this.getWhitespaceAccumulatedHeightBeforeLineNumber(lineNumber + (includeViewZones ? 1 : 0));
		return previousLinesHeight + previousWhitespacesHeight + this._paddingTop;
	}