To print a label, you need to call use the label printing method from anywhere (other modules, server actions, etc.).

Example : Print the label of a product ::

    self.env['printing.label.zpl2'].browse(label_id).print_label(
        self.env['printing.printer'].browse(printer_id),
        self.env['product.product'].browse(product_id))

You can also use the generic label printing wizard, if added on some models.

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