def getKey(self, key):
values = listUtils.filterUniqueTrue([
obj.get(key) for obj in self.objects
])
if values:
return values[0]
def joinFullnames(self, ancestors):
ancestorsSelf = ancestors + [self]
names = listUtils.filterUniqueTrue(map(lambda x: x.fullname, ancestorsSelf))
nameDelimeter = self.nameDelimeter
return nameDelimeter.join ( names )
