src/vs/editor/common/model/tokenizationTextModelPart.ts/TokenizationTextModelPart/forceTokenization
class TokenizationTextModelPart:	public forceTokenization(lineNumber: number): void {
		if (lineNumber < 1 || lineNumber > this._textModel.getLineCount()) {
			throw new Error('Illegal value for lineNumber');
		}

		this._tokenization.forceTokenization(lineNumber);
	}