Update src/ansys/fluent/core/solver/flobject.py

Co-authored-by: Copilot <[email protected]>

Author: mkundu1

src/ansys/fluent/core/solver/flobject.py

@@ -819,7 +819,7 @@ def to_python_keys(cls, value: StateT) -> StateT:
         """
         return value
 
-    def __call__(self, *args, **kwargs):
+    def __call__(self, *args, **kwargs) -> StateT | None:
         """Get or set the state of the object."""
         if kwargs:
             self.set_state(kwargs)