[MERGE - PEP8 AND V7-MIG] All migrated to V7 Just improved osv.osv => osv.Model, osv.osv_memory => osv.TransientModel import inside openerp.* enviroment Erased class instansiation no necesarry anymore in V7 AUTOPEP8 run, Left PEP8 long lines manually.
'payment_method_id':fields.many2one('payment.method', 'Payment Method', required=False, help="In this field selects the payment method with which to cancel the invoice"),
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'payment_method_id': fields.many2one('payment.method', 'Payment Method', required=False, help="In this field selects the payment method with which to cancel the invoice"),