Add doc comments to data interface for manifest labels

endpoints/api/manifest_models_interface.py

@@ -12,7 +12,14 @@ class ManifestLabel(
     'source_type_name',
     'media_type_name',
     ])):
-  
+  """
+  ManifestLabel represents a label on a manifest
+  :type uuid: string
+  :type key: string 
+  :type value: string 
+  :type source_type_name: string  
+  :type media_type_name: string 
+  """ 
   def to_dict(self):
     return {
       'id': self.uuid,
@@ -25,18 +32,66 @@ class ManifestLabel(
   
 @add_metaclass(ABCMeta)
 class ManifestLabelInterface(object):
+  """
+  Data interface that the manifest labels API uses
+  """
+  
   @abstractmethod
   def get_manifest_labels(self, namespace_name, repository_name, manifestref, filter=None):
-    pass
+    """
+    
+    Args:
+      namespace_name: string
+      repository_name: string
+      manifestref: string
+      filter: string
+
+    Returns:
+      list(ManifestLabel) or None
+
+    """   
 
   @abstractmethod
   def create_manifest_label(self, namespace_name, repository_name, manifestref, key, value, source_type_name, media_type_name):
-    pass
+    """
+    
+    Args:
+      namespace_name: string
+      repository_name: string
+      manifestref: string
+      key: string
+      value: string
+      source_type_name: string 
+      media_type_name: string
+
+    Returns:
+      ManifestLabel or None 
+    """
   
   @abstractmethod
   def get_manifest_label(self, namespace_name, repository_name, manifestref, label_uuid):
-    pass
+    """
+    
+    Args:
+      namespace_name: string
+      repository_name: string
+      manifestref: string
+      label_uuid: string
+
+    Returns:
+      ManifestLabel or None
+    """
   
   @abstractmethod
   def delete_manifest_label(self, namespace_name, repository_name, manifestref, label_uuid):
-    pass
+    """
+    
+    Args:
+      namespace_name: string
+      repository_name: string
+      manifestref: string
+      label_uuid: string
+
+    Returns:
+      ManifestLabel or None
+    """

endpoints/api/manifest_models_pre_oci.py

@@ -47,4 +47,4 @@ class ManifestLabelPreOCI(ManifestLabelInterface):
       media_type_name=label_obj.media_type.name,
     )
 
-pre_oci_model = ManifestLabelPreOCI()
+pre_oci_model = ManifestLabelPreOCI()