code: def get_ontology(self, id=None, uri=None, match=None):
          
  
          if not id and not uri and not match:
              return None
  
          if type(id) == type("string"):
              uri = id
              id = None
              if not is_http(uri):
                  match = uri
                  uri = None
          if match:
              if type(match) != type("string"):
                  return []
              res = []
              for x in self.all_ontologies:
                  if match.lower() in x.uri.lower():
                      res += [x]
              return res
          else:
              for x in self.all_ontologies:
                  if id and x.id == id:
                      return x
                  if uri and x.uri.lower() == uri.lower():
                      return x
              return None
docs: get the saved-ontology with given ID or via other methods...