'Return the skip reason set on this test, if any is set. Checks on the
instance first, then the class, then the module, then packages. As
soon as it finds something with a C{skip} attribute, returns that.
Returns L{None} if it cannot find anything. See L{TestCase} docstring
for more details.'

def getSkip(self):

    return util.acquireAttribute(self._parents, 'skip', None)
