code: public PKCS9Attribute[] getAttributes() {
          PKCS9Attribute[] attribs = new PKCS9Attribute[attributes.size()];
          ObjectIdentifier oid;
  
          int j = 0;
          for (int i=1; i < PKCS9Attribute.PKCS9_OIDS.length &&
                        j < attribs.length; i++) {
              attribs[j] = getAttribute(PKCS9Attribute.PKCS9_OIDS[i]);
  
              if (attribs[j] != null)
                  j++;
          }
          return attribs;
      }
docs: Get an array of all attributes in this set, in order of OID.