Close #7143: py domain: Add :final: option to py:*: directives

doc/usage/restructuredtext/domains.rst

@@ -212,6 +212,15 @@ The following directives are provided for module and class contents:
    Describes an exception class.  The signature can, but need not include
    parentheses with constructor arguments.
 
+   .. rubric:: options
+
+   .. rst:directive:option:: final
+      :type: no value
+
+      Indicate the class is a final class.
+
+      .. versionadded:: 3.1
+
 .. rst:directive:: .. py:class:: name
                    .. py:class:: name(parameters)
 
@@ -235,6 +244,15 @@ The following directives are provided for module and class contents:
 
    The first way is the preferred one.
 
+   .. rubric:: options
+
+   .. rst:directive:option:: final
+      :type: no value
+
+      Indicate the class is a final class.
+
+      .. versionadded:: 3.1
+
 .. rst:directive:: .. py:attribute:: name
 
    Describes an object data attribute.  The description should include
@@ -283,6 +301,13 @@ The following directives are provided for module and class contents:
 
       .. versionadded:: 2.1
 
+   .. rst:directive:option:: final
+      :type: no value
+
+      Indicate the class is a final method.
+
+      .. versionadded:: 3.1
+
    .. rst:directive:option:: property
       :type: no value