docs: protected void updateFontTable()
      {
          PDResources resources = pdpage.getResources();
          if (resources != null)
          {
              try
              {
                  processFontResources(resources, fontTable);
              } catch (IOException e) {
                  log.error("Error processing font resources: "
                          + "Exception: {} {}", e.getMessage(), e.getClass());
              }
          }
      }