diff --git a/doc/source/_ext/autodocclass.py b/doc/source/_ext/autodocclass.py
index 1e986af0..c126d471 100644
--- a/doc/source/_ext/autodocclass.py
+++ b/doc/source/_ext/autodocclass.py
@@ -59,7 +59,7 @@ def _update(clss, obj_name, parent_name=None, parent_path=None):
                 if the_member_name.startswith("_"):
                     continue
                 cls = getattr(clss, the_member_name)
-                the_member_value = cls.__doc__.split("\n")[0]
+                the_member_value = (cls.__doc__ or "").split("\n")[0]
                 if cls.__class__.__name__ in (
                     "PyLocalPropertyMeta",
                     "PyLocalObjectMeta",
diff --git a/src/ansys/fluent/visualization/matplotlib/matplot_objects.py b/src/ansys/fluent/visualization/matplotlib/matplot_objects.py
index cd27130e..76e42097 100644
--- a/src/ansys/fluent/visualization/matplotlib/matplot_objects.py
+++ b/src/ansys/fluent/visualization/matplotlib/matplot_objects.py
@@ -2,6 +2,7 @@
 import sys
 from typing import Optional
 
+from ansys.fluent.core.meta import Command
 from ansys.fluent.core.post_objects.post_object_definitions import (
     MonitorDefn,
     XYPlotDefn,
@@ -48,6 +49,7 @@ class XYPlot(XYPlotDefn):
         plot1.plot("window-0")
     """
 
+    @Command
     def plot(self, window_id: Optional[str] = None):
         """Draw XYPlot.
 
@@ -82,6 +84,7 @@ class MonitorPlot(MonitorDefn):
         plot1.plot("window-0")
     """
 
+    @Command
     def plot(self, window_id: Optional[str] = None):
         """Draw Monitor Plot.
 
diff --git a/src/ansys/fluent/visualization/pyvista/pyvista_objects.py b/src/ansys/fluent/visualization/pyvista/pyvista_objects.py
index c7037c50..87c689e3 100644
--- a/src/ansys/fluent/visualization/pyvista/pyvista_objects.py
+++ b/src/ansys/fluent/visualization/pyvista/pyvista_objects.py
@@ -3,6 +3,7 @@
 import sys
 from typing import Optional
 
+from ansys.fluent.core.meta import Command
 from ansys.fluent.core.post_objects.post_object_definitions import (
     ContourDefn,
     MeshDefn,
@@ -52,6 +53,7 @@ class Mesh(MeshDefn):
         mesh1.display("window-0")
     """
 
+    @Command
     def display(self, window_id: Optional[str] = None):
         """Display mesh graphics.
 
@@ -78,6 +80,7 @@ class Pathlines(PathlinesDefn):
         pathlines1.display("window-0")
     """
 
+    @Command
     def display(self, window_id: Optional[str] = None):
         """Display mesh graphics.
 
@@ -115,6 +118,7 @@ class Surface(SurfaceDefn):
         surface1.display("window-0")
     """
 
+    @Command
     def display(self, window_id: Optional[str] = None):
         """Display surface graphics.
 
@@ -150,6 +154,7 @@ class Contour(ContourDefn):
         contour1.display("window-0")
     """
 
+    @Command
     def display(self, window_id: Optional[str] = None):
         """Display contour graphics.
 
@@ -186,6 +191,7 @@ class Vector(VectorDefn):
         vector1.display("window-0")
     """
 
+    @Command
     def display(self, window_id: Optional[str] = None):
         """Display vector graphics.