code: private String getURLInfo() {
          try {
              if (hasProperty(PROXY_FOR)) {
                  return getNode().getProperty(PROXY_FOR).getValue().getString();
              } else if (hasProperty(REDIRECTS_TO)) {
                  return getNode().getProperty(REDIRECTS_TO).getValue().getString();
              }
          } catch (RepositoryException e) {
              throw new RepositoryRuntimeException(e);
          }
  
          return null;
      }
docs: Fetch the URL of the external binary
  @return String containing the URL location of external binary, else null if it's an internal binary