/**
  * Returns the default X509 Certificate, which is associated with the getDefaultPublicKey(), where
  * the latter is equivalent to getPublicKey(null)
  *
  * @return
  */
 public X509Certificate getDefaultX509Certificate() {
   return resourceAdapter.getDefaultX509Certificate();
 }
 /**
  * Returns default PublicKey, which is equivalent to getPublicKey(null)
  *
  * @return
  */
 public PublicKey getDefaultPublicKey() {
   return resourceAdapter.getDefaultPublicKey();
 }
 /**
  * Returns a PublicKey for a certificate, after checking it validity as a queue processing
  * certificate
  *
  * @param alias
  * @return
  */
 public PublicKey getPublicKey(X509Certificate certificate) {
   return resourceAdapter.getPublicKey(certificate);
 }
 /**
  * Returns the default PrivateKey, which is equivalent to getPrivateKey(null)
  *
  * @return
  */
 public PrivateKey getDefaultPrivateKey() {
   return resourceAdapter.getDefaultPrivateKey();
 }