src/vs/editor/common/tokens/sparseMultilineTokens.ts/SparseMultilineTokens/getRange
class SparseMultilineTokens:	public getRange(): Range | null {
		const deltaRange = this._tokens.getRange();
		if (!deltaRange) {
			return deltaRange;
		}
		return new Range(this._startLineNumber + deltaRange.startLineNumber, deltaRange.startColumn, this._startLineNumber + deltaRange.endLineNumber, deltaRange.endColumn);
	}