Merge pull request #3806 from aaronchall/patch-2

indent code block

docs/source/extending/contents.rst

@@ -225,25 +225,25 @@ return for a more complete implementation.
 
 .. code-block:: python
 
-class NoOpCheckpoints(GenericCheckpointsMixin, Checkpoints):
-    """requires the following methods:"""
-    def create_file_checkpoint(self, content, format, path):
-        """ -> checkpoint model"""
-    def create_notebook_checkpoint(self, nb, path):
-        """ -> checkpoint model"""
-    def get_file_checkpoint(self, checkpoint_id, path):
-        """ -> {'type': 'file', 'content': <str>, 'format': {'text', 'base64'}}"""
-    def get_notebook_checkpoint(self, checkpoint_id, path):
-        """ -> {'type': 'notebook', 'content': <output of nbformat.read>}"""
-    def delete_checkpoint(self, checkpoint_id, path):
-        """deletes a checkpoint for a file"""
-    def list_checkpoints(self, path):
-        """returns a list of checkpoint models for a given file, 
-        default just does one per file
-        """
-        return []
-    def rename_checkpoint(self, checkpoint_id, old_path, new_path):
-        """renames checkpoint from old path to new path"""
+    class NoOpCheckpoints(GenericCheckpointsMixin, Checkpoints):
+        """requires the following methods:"""
+        def create_file_checkpoint(self, content, format, path):
+            """ -> checkpoint model"""
+        def create_notebook_checkpoint(self, nb, path):
+            """ -> checkpoint model"""
+        def get_file_checkpoint(self, checkpoint_id, path):
+            """ -> {'type': 'file', 'content': <str>, 'format': {'text', 'base64'}}"""
+        def get_notebook_checkpoint(self, checkpoint_id, path):
+            """ -> {'type': 'notebook', 'content': <output of nbformat.read>}"""
+        def delete_checkpoint(self, checkpoint_id, path):
+            """deletes a checkpoint for a file"""
+        def list_checkpoints(self, path):
+            """returns a list of checkpoint models for a given file, 
+            default just does one per file
+            """
+            return []
+        def rename_checkpoint(self, checkpoint_id, old_path, new_path):
+            """renames checkpoint from old path to new path"""
 
 See ``GenericFileCheckpoints`` in :mod:`notebook.services.contents.filecheckpoints`
 for a more complete example.