code: public Object get(String name) throws IOException {
          if (name.equalsIgnoreCase(KEY_ID)) {
              return (id);
          } else if (name.equalsIgnoreCase(AUTH_NAME)) {
              return (names);
          } else if (name.equalsIgnoreCase(SERIAL_NUMBER)) {
              return (serialNum);
          } else {
            throw new IOException("Attribute name not recognized by " +
                          "CertAttrSet:AuthorityKeyIdentifier.");
          }
      }
docs: Get the attribute value.