old_contents: # -*- coding: utf-8 -*-
  # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
  
  from openerp import fields, models, _, api
  from openerp.osv import expression
  
  
  class ResPartner(models.Model):
      _inherit = 'res.partner'
  
      gender = fields.Selection([('male', 'Male'),
                                 ('female', 'Female'),
                                 ('other', 'Other')
                                 ])
  
new_contents: # -*- coding: utf-8 -*-
  # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
  
  from openerp import fields, models, _, api
  
  
  class ResPartner(models.Model):
      _inherit = 'res.partner'
  
      gender = fields.Selection([('male', 'Male'),
                                 ('female', 'Female'),
                                 ('other', 'Other')
                                 ])
  
subject: Remove unused openerp reference.