Replacing static provider documentation examples with literalincludes

docs/providers/static.rst

@@ -14,29 +14,5 @@ readability and providing object's type.
 
 Example:
 
-.. code-block:: python
-
-    """`Static` providers example."""
-
-    from objects.providers import Class
-    from objects.providers import Object
-    from objects.providers import Function
-    from objects.providers import Value
-
-
-    # Provides class - `object`:
-    cls_provider = Class(object)
-    assert cls_provider() is object
-
-    # Provides object - `object()`:
-    object_provider = Object(object())
-    assert isinstance(object_provider(), object)
-
-    # Provides function - `len`:
-    function_provider = Function(len)
-    assert function_provider() is len
-
-    # Provides value - `123`:
-    value_provider = Value(123)
-    assert value_provider() == 123
-
+.. literalinclude:: ../../examples/providers/static.py
+   :language: python