code: def get_all(self, model):
          
          tags = {}
          for name, tag in self.tags.items():
              for mtag in model.tags:
                  if tag.is_tag(mtag):
                      tags[name] = tag.get(model)
          return tags
docs: Get all known tags from a model.
  
          Returns a dict of {<tag_name>:<tag_value>}.