code: public URI resolve(final URI uri, final Sid accountSid) {
          getHttpConnector();
  
          String restcommAddress = null;
  
          if (accountSid != null && daoManager != null) {
              Sid organizationSid = daoManager.getAccountsDao().getAccount(accountSid).getOrganizationSid();
              restcommAddress = daoManager.getOrganizationsDao().getOrganization(organizationSid).getDomainName();
          }
  
          if (restcommAddress == null || restcommAddress.isEmpty()) {
              if (useHostnameToResolve) {
                  restcommAddress = RestcommConfiguration.getInstance().getMain().getHostname();
                  if (restcommAddress == null || restcommAddress.isEmpty()) {
                      try {
                          InetAddress addr = DNSUtils.getByName(selectedConnector.getAddress());
                          restcommAddress = addr.getCanonicalHostName();
                      } catch (UnknownHostException e) {
                          logger.error("Unable to resolveWithBase: " + selectedConnector + " to hostname: " + e);
                          restcommAddress = selectedConnector.getAddress();
                      }
                  }
              } else {
                  restcommAddress = selectedConnector.getAddress();
              }
          }
  
          String base = selectedConnector.getScheme() + "://" + restcommAddress + ":" + selectedConnector.getPort();
          try {
              return resolveWithBase(new URI(base), uri);
          } catch (URISyntaxException e) {
              throw new IllegalArgumentException("Badly formed URI: " + base, e);
          }
      }
docs: Use to resolve a relative URI
  using the domain name of the Organization
  that the provided AccountSid belongs
  
  @param uri The relative URI
  @param accountSid The accountSid to get the Org domain
  @return The absolute URI