'Add a mailing address field to a form description.
Arguments:
form_desc: A form description
Keyword Arguments:
required (bool): Whether this field is required; defaults to True'

def _add_mailing_address_field(self, form_desc, required=True):

    mailing_address_label = _(u'Mailing    address')
    error_msg = accounts.REQUIRED_FIELD_MAILING_ADDRESS_MSG
    form_desc.add_field('mailing_address', label=mailing_address_label, field_type='textarea', required=required, error_messages={'required': error_msg})
