code: def insert(self):
          
          from mongoframes.queries import to_refs
  
          # Send insert signal
          signal('insert').send(self.__class__, frames=[self])
  
          # Prepare the document to be inserted
          document = to_refs(self._document)
  
          # Insert the document and update the Id
          self._id = self.get_collection().insert_one(document).inserted_id
  
          # Send inserted signal
          signal('inserted').send(self.__class__, frames=[self])
docs: Insert this document