code: private String validateAuthn(String value) {
          // for now, if we got here we're validating an authnToken
          String result = null;
          String valueLower = value.toLowerCase();
          do {
              if (valueLower.equals("saml")) {
                  result = JAXRSClientConstants.SAML_HANDLER;
                  break;
              }
              if (valueLower.equals("oauth")) {
                  result = JAXRSClientConstants.OAUTH_HANDLER;
                  break;
              }
              if (valueLower.equals("ltpa")) {
                  result = JAXRSClientConstants.LTPA_HANDLER;
              }
          } while (false);
          if (result == null) {
              Tr.warning(tc, "warn.invalid.authorization.token.type", value); // CWWKW0061W
          }
          return result;
      }
docs: validate the value for authnToken key and select appropriate new key
  Note that the check is not case sensitive.
  
  @param value - shorthand key name
  @return long property name