expose the functionality of AIApp programmatically

dashjoin/dashjoin-aas#716

Author: aeberhart

dashjoin-core/src/main/java/org/dashjoin/function/FunctionStreamService.java

@@ -7,7 +7,6 @@
 import java.io.Reader;
 import java.io.Writer;
 import java.lang.reflect.Method;
-import java.util.List;
 import org.dashjoin.service.ACLContainerRequestFilter;
 import org.dashjoin.service.Data;
 import org.dashjoin.service.Services;
@@ -103,7 +102,7 @@ public void toString(@Context SseEventSink eventSink, @Context Sse sse,
         throw new Exception("Only AIApp supports server sent events");
 
       Method m = a.getClass().getMethod("sse",
-          new Class[] {Sse.class, SseEventSink.class, String.class, List.class});
+          new Class[] {Sse.class, SseEventSink.class, String.class, Object.class});
       m.invoke(a, sse, sink, authHeader, argument);
     }
   }