def asVector(self, time=None):
    assert (self.isArray or self.isCompound), ("'%s' not an array" % self)
    return Vector(self.read(time=time))
def asVector(self, time=None):
    assert (self.isArray or self.isCompound), ("'%s' not an array" % self)
    return Vector(self.read(time=time))