Is it it posible to creat a One2many field in a custom Moduel in order to create a Picking In or Put?

Here my code, I got this erros

MissingError
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models.py

class prod_custom(models.Model):
    _name = 'prod.custom'
     _inherit = 'stock.picking'
 materiaprima = fields.One2many('stock.picking','name') 

XML

<page string= "Materia Prima">
                                <group string="Materia Prima a Utilizar">
                                    <field name="materiaprima">
                                        <tree string="Ingrese la Materia Prima">
                                            <field name="name"/>
                                        </tree>
                                    </field>
                                </group>
                            </page>