human
Solve the following python programming problem given the following code:
def _test_allocate_hosting_port(self, test_info1) : 
    def _validate_allocation(plugin, ctx, r, port_db, test_info, i, hd, plugging_driver) : 
        binding_db = plugin._allocate_hosting_port (ctx, r ['id'], port_db, hd ['id'], plugging_driver) 
        self.assertIsNotNone (binding_db.hosting_port_id) 
        self.assertEqual (binding_db.hosting_port_id, port_db.id) 
        self.assertEqual (binding_db.segmentation_id, test_info ['vlan_tags'] [i]) 
plugging_driver = HwVLANTrunkingPlugDriver () 
    with self.subnet () as subnet1 : 
        sn1 = subnet1 ['subnet'] 
        ext_net_id = sn1 ['network_id'] 
        self._set_net_external (ext_net_id) 
        gw_info = { 
            'network_id' : ext_net_id, 
} 
        with self.router (external_gateway_info = gw_info, tenant_id = sn1 ['tenant_id']) as router1 : 
            r1 = router1 ['router'] 
            hds = self._list ('hosting_devices') ['hosting_devices'] 
            hd = hds [0] 
            self._pv_info = { 
                'vlan' : { 
                    
}, 
                'vxlan' : { 
                    
}, 
} 
            self._network_type = test_info1 ['network_types'] [0] 
            self.real_get_network = self.core_plugin.get_network 
            self.real_get_networks = self.core_plugin.get_networks 
            with mock.patch.object (self.core_plugin, 'get_network') as m1, mock.patch.object (self.core_plugin, 'get_networks') as m2 : 
                m1.side_effect = self._mocked_get_network 
                m2.side_effect = self._mocked_get_networks 
                u1_ctx = context.Context ('', r1 ['tenant_id'], is_admin = True) 
                gw_port_db = self.core_plugin._get_ports_query (u1_ctx, filters = { 
                    'network_id' : [ext_net_id], 
}).one () 
                _validate_allocation (self.plugin, u1_ctx, r1, gw_port_db, test_info1, 0, hd, plugging_driver) 
                for i in range (1, len (test_info1 ['network_types'])) : 
                    cidr = (('1.0.' + str (i)) + '.0/24') 
     ...

    
    

    Fix the buggy line: _validate_allocation (self.plugin, u1_ctx, r1, self, test_info1, i, hd, plugging_driver)
assistant
#Here is Python program to fix the buggy line: _validate_allocation (self.

_validate_allocation (self.plugin, u1_ctx, r1, port_db, test_info1, i, hd, plugging_driver)