a movement is an arrow and an amount

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28072 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/interfaces/movement.py

@@ -27,9 +27,11 @@
 #
 ##############################################################################
 
-from zope.interface import Interface
+from Products.ERP5.interfaces.amount import IAmount
+from Products.ERP5.interfaces.arrow_base import IArrowBase
 
-class IMovement(Interface):
+
+class IMovement(IAmount, IArrowBase):
   """Movement interface specification
 
   A movement represents an amount of resources which 
@@ -161,4 +163,5 @@ class IMovement(Interface):
 
   def getDestinationInventoriatedTotalAssetCredit():
     """Unclear - XXX
-    """
\ No newline at end of file
+    """
+