src/vs/editor/common/model/tokenizationTextModelPart.ts/TokenizationTextModelPart/clearTokens
class TokenizationTextModelPart:	public clearTokens(): void {
		this._tokens.flush();
		this._emitModelTokensChangedEvent({
			tokenizationSupportChanged: true,
			semanticTokensApplied: false,
			ranges: [
				{
					fromLineNumber: 1,
					toLineNumber: this._textModel.getLineCount(),
				},
			],
		});
	}