src/vs/workbench/contrib/debug/common/replModel.ts/ReplEvaluationResult/evaluateExpression
class ReplEvaluationResult:	override async evaluateExpression(expression: string, session: IDebugSession | undefined, stackFrame: IStackFrame | undefined, context: string): Promise<boolean> {
		const result = await super.evaluateExpression(expression, session, stackFrame, context);
		this._available = result;

		return result;
	}