code: public Vector<ObjectIdentifier> get(String name) throws IOException {
          if (name.equalsIgnoreCase(USAGES)) {
              //XXXX May want to consider cloning this
              return keyUsages;
          } else {
            throw new IOException("Attribute name [" + name +
                                  "] not recognized by " +
                                  "CertAttrSet:ExtendedKeyUsageExtension.");
          }
      }
docs: Get the attribute value.