def find_prefix(self, iri: Union[URIRef, Literal, str]) -> Union[None, str]:
        """ Finds if uri is in common_namespaces

        Auto adds prefix if incoming iri has a uri in common_namespaces. If its not in the local
        library, then it will just be spit out as the iri and not saved/condensed into qualified
        names.

        The reason for the maxes is find the longest string match. This is to avoid accidently
        matching iris with small uris when really is a more complete uri that is the match.

        Args: iri: iri to be searched to find a known uri in it.

        Eample:
            In  [1]: print(find_prefix("http://www.w3.org/2000/01/rdf-schema#label"))
            Out [1]: "http://www.w3.org/2000/01/rdf-schema#"
            In  [2]: print(find_prefix("http://made_up_uri/label"))
            Out [2]: None
        """
        iri = str(iri)
        max_iri_len = 0
        max_prefix = None
        for prefix, uri in common_namespaces.items():
            if uri in iri and max_iri_len < len(uri): # if matched uri is larger; replace as king
                max_prefix = prefix
                max_iri_len = len(uri)
        return max_prefix
def find_prefix ( self , iri : Union [ URIRef , Literal , str ] ) -> Union [ None , str ] : iri = str ( iri ) max_iri_len = 0 max_prefix = None for prefix , uri in common_namespaces . items ( ) : if uri in iri and max_iri_len < len ( uri ) : max_prefix = prefix max_iri_len = len ( uri ) return max_prefix
Finds if uri is in common_namespaces

        Auto adds prefix if incoming iri has a uri in common_namespaces. If its not in the local
        library, then it will just be spit out as the iri and not saved/condensed into qualified
        names.

        The reason for the maxes is find the longest string match. This is to avoid accidently
        matching iris with small uris when really is a more complete uri that is the match.

        Args: iri: iri to be searched to find a known uri in it.

        Eample:
            In  [1]: print(find_prefix("http://www.w3.org/2000/01/rdf-schema#label"))
            Out [1]: "http://www.w3.org/2000/01/rdf-schema#"
            In  [2]: print(find_prefix("http://made_up_uri/label"))
            Out [2]: None