src/vs/editor/common/tokens/sparseMultilineTokens.ts/SparseMultilineTokens/removeTokens
class SparseMultilineTokens:	public removeTokens(range: Range): void {
		const startLineIndex = range.startLineNumber - this._startLineNumber;
		const endLineIndex = range.endLineNumber - this._startLineNumber;

		this._startLineNumber += this._tokens.removeTokens(startLineIndex, range.startColumn - 1, endLineIndex, range.endColumn - 1);
		this._updateEndLineNumber();
	}