'Get the initiator group in a masking view.
:param array: the array serial number
:param maskingview_name: masking view name
:returns: initiator group name'

def get_initiator_group_from_masking_view(self, array, maskingview_name):

    return self.rest.get_element_from_masking_view(array, maskingview_name, host=True)
