Remove abstract method from classmethods (since it won't error if the abstract method isn't implemented until instantiation.

volatility/framework/interfaces/configuration.py

@@ -33,7 +33,7 @@ def schema_name_split(path):
     return path.split(SCHEMA_NAME_DIVIDER)
 
 
-class ConfigurationSchemaNode(validity.ValidityRoutines):
+class ConfigurationSchemaNode(validity.ValidityRoutines, metaclass = ABCMeta):
     """Class to distinguish configuration elements from everything else"""
 
     def __init__(self, name, description = None, default = None, optional = False):

volatility/framework/interfaces/objects.py

@@ -87,13 +87,12 @@ class ObjectInterface(validity.ValidityRoutines, metaclass = ABCMeta):
                                object_info = ObjectInformation(layer_name = self.vol.layer_name,
                                                                offset = self.vol.offset))
 
-    class VolTemplateProxy(object, metaclass = ABCMeta):
+    class VolTemplateProxy(object):
         """A container for proxied methods that the ObjectTemplate of this object will call.
 
         They are class methods rather than static methods, to allow for code reuse."""
 
         @classmethod
-        @abstractmethod
         def size(cls, template):
             """Returns the size of the template object"""
 

volatility/framework/interfaces/plugins.py

@@ -38,7 +38,6 @@ class PluginInterface(validity.ValidityRoutines, configuration_interface.Configu
         return self._context
 
     @classmethod
-    @abstractmethod
     def get_schema(cls):
         """Returns a list of configuration schema items"""
         return []