Experimental: null pointer exception when using exportAs

[fjtirado]

when using this workflow

return workflow("investment-memo")
        .tasks(
                get("fetchMarketData", "[http://localhost:8081/market-data/{ticker}](http://localhost:8081/market-data/%7Bticker%7D)")
                        .exportAs(result -> new InvestmentPrompt(
                                result.ticker(), 
                                "",
                                "",
                                ""), MarketDataSnapshot.class)

then following exception is thrown

2025-11-26 18:23:13,440 ERROR [io.quarkus.vertx.http.runtime.QuarkusErrorHandler] (vert.x-eventloop-thread-1) HTTP Request to /investments/CSU.TO failed, error id: 687f4df4-c30a-49b6-afc6-df9f0c9e664c-1: java.lang.NullPointerException: Cannot invoke "io.serverlessworkflow.impl.WorkflowModel.as(java.lang.Class)" because "n" is null
	at io.serverlessworkflow.impl.expressions.func.JavaExpressionFactory.lambda$buildExpression$1(JavaExpressionFactory.java:47)
	at io.serverlessworkflow.impl.expressions.AbstractExpressionFactory.lambda$buildFilter$5(AbstractExpressionFactory.java:61)
	at io.serverlessworkflow.impl.executors.AbstractTaskExecutor.lambda$apply$11(AbstractTaskExecutor.java:275)
	at java.base/java.util.Optional.ifPresent(Optional.java:178)
	at io.serverlessworkflow.impl.executors.AbstractTaskExecutor.lambda$apply$14(AbstractTaskExecutor.java:272)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1773)

When using YAML not initilizing the context is fine because JQ is more tolerant with null than java, but it has to be initialized for java