code: def _update_to_s3_uri(property_key, resource_property_dict, s3_uri_value="s3://bucket/value"):
          
          uri_property = resource_property_dict.get(property_key, ".")
  
          # ignore if dict or already an S3 Uri
          if isinstance(uri_property, dict) or SamTemplateValidator.is_s3_uri(uri_property):
              return
  
          resource_property_dict[property_key] = s3_uri_value
docs: Updates the 'property_key' in the 'resource_property_dict' to the value of 's3_uri_value'
  
          Note: The function will mutate the resource_property_dict that is pass in
  
          Parameters
          ----------
          property_key str, required
              Key in the resource_property_dict
          resource_property_dict dict, required
              Property dictionary of a Resource in the template to replace
          s3_uri_value str, optional
              Value to update the value of the property_key to