code: def embed(self, rel, other, wrap=False):
          
  
          if other == self:
              return
  
          embedded = self.o.setdefault(EMBEDDED_KEY, {})
          collected_embedded = CanonicalRels(embedded,
                                             self.curies,
                                             self.base_uri)
  
          if rel not in collected_embedded:
              if wrap:
                  embedded[rel] = [other.as_object()]
              else:
                  embedded[rel] = other.as_object()
          else:
              original_rel = collected_embedded.original_key(rel)
  
              current_embedded = embedded[original_rel]
              if isinstance(current_embedded, list):
                  current_embedded.append(other.as_object())
              else:
                  embedded[original_rel] = [current_embedded, other.as_object()]
  
          if not self.draft.automatic_link:
              return
  
          url = other.url()
          if not url:
              return
  
          if url in (link.url() for link in self.links.get(rel, [])):
              return
  
          self.add_link(rel, other, wrap=wrap)
docs: Embeds a document inside this document.
  
          Arguments:
  
          - ``rel``: a string specifying the link relationship type of the
            embedded resource. ``rel`` should be a well-known link relation name
            from the IANA registry
            (http://www.iana.org/assignments/link-relations/link-relations.xml),
            a full URI, or a CURIE.
          - ``other``: a ``Document`` instance that will be embedded in this
            document. If ``other`` is identical to this document, this method
            will silently fail.
          - ``wrap``: Defaults to False, but if True, specifies that the embedded
            resource object should be initally wrapped in a JSON array even if it
            is the first embedded resource for the given ``rel``.
  
          Calling code should use this method to add embedded resources instead
          of modifying ``embedded`` directly.
  
          This method embeds the given document in this document with the given
          ``rel``. If one or more documents have already been embedded for that
          ``rel``, the new document will be embedded in addition to those
          documents.