docs: def filter_collections(self, model, context=None):
          """
          Filter collections
          Runs filters on collection properties changing them in place.
          :param model:  object or dict
          :param context: object, dict or None
          :return: None
          """
          if model is None:
              return
  
          for property_name in self.collections:
              prop = self.collections[property_name]
              collection = self.get(model, property_name)
              filtered_value = prop.filter(
                  value=collection,
                  model=model,
                  context=context
              )
              self.set(model, property_name, filtered_value)
  
              prop.filter_with_schema(
                  collection,
                  context if prop.use_context else None
              )