wenjin272 commented on code in PR #1159:
URL: https://github.com/apache/flink-agents/pull/1159#discussion_r4120096185


##########
api/src/main/java/org/apache/flink/agents/api/function/PythonFunction.java:
##########
@@ -48,6 +48,15 @@ public PythonFunction(
         this.qualName = Objects.requireNonNull(qualName, "qualName");
     }
 
+    /**
+     * Convenience factory for a Python cross-language target, mirroring {@code
+     * JavaFunction.forAction}. Reads naturally in the annotated-field form: 
{@code
+     * PythonFunction.of( "my_pkg.handlers", "handle_input")}.
+     */
+    public static PythonFunction of(String module, String qualName) {
+        return new PythonFunction(module, qualName);
+    }

Review Comment:
   Could we reject empty `module` and `qualName` in the constructor, alongside 
the null checks, and add regression tests? The old annotation path rejected 
partially specified targets, but the new field declaration accepts them and 
defers the failure to runtime.



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