//I need to store the current id that is self.beneficiary_id and id that is passed from ui that is retained_id
//and the record of current id in the many2many field 'merged_beneficiaries_ids' and show the address of the current id in the
//UI. I am asking about the synatax to store in this many2many field eg.self.write()?

@api.multi
    def merge_beneficiaries(self):
        idr = self.retained_id
        print(idr)
        beneficiary_data = self.env['openg2p.beneficiary'].browse(idr)
        print(beneficiary_data)

        beneficiary_data.write(
            {'first_name': str(self.firstname),
             'last_name': str(self.firstname),
             'email': str(self.firstname),
             'phone': str(self.phone),
             'street': str(self.street),
             'street2': str(self.street),
             'city': str(self.city),
             'postal_code': str(self.zip),
             'identity': str(self.identity_passport),
             'emergency_contact_name': str(self.emergency_contact),
             'emergency_contact_phone': str(self.emergency_phone)})

        delete_url = "http://localhost:8080/index/"+str(idr)
        r = requests.post(delete_url)
        print(r)
        self.clear_beneficiaries()
        self.retained_id = 0