new_contents: from coffin.template import Library
  from django.template.loader import render_to_string
  from jinja2 import nodes
  from jinja2.ext import Extension
  
  
  register = Library()
  
  
  class MerchantExtension(Extension):
  
      tags = set(['render_integration'])
  
      def parse(self, parser):
          stream = parser.stream
          lineno = stream.next().lineno
  
          obj = parser.parse_expression()
          call_node = self.call_method('render_integration', args=[obj])
  
          return nodes.Output([call_node]).set_lineno(lineno)
  
      @classmethod
      def render_integration(self, obj):
          form_str = render_to_string(obj.template, {'integration': obj})
          return form_str
  
  register.tag(MerchantExtension)
  
subject: Revert "Revert "Added an extension to allow rendering of integration objects in a Jinja2 template.""