def render(self, context, instance, placeholder):
context = super(SquareCheckoutFormPlugin, self).render(context, instance, placeholder)<EOL>context.update({<EOL>'<STR_LIT>': getattr(settings,'<STR_LIT>','<STR_LIT>'),<EOL>})<EOL>return context<EOL>
Add the cart-specific context to this form