+ pass
+
+
+class ExtException(Exception):
+ """ Base class for all Ext.Direct-related exceptions. """
+ pass
+
+
+class InvalidExtMethod(ExtException):
+ """ Indicate that a function cannot be an Ext.Direct method. """
+ pass
+
+
+class NotExtAction(ExtException):
+ """ Indicate that an object is not an Ext.Direct action. """
+ pass
+
+
+class NotExtMethod(ExtException):
+ """ Indicate that a function is not an Ext.Direct method. """