code: public static void addThreadMetaData(String tabName, String key, Object value) {
          THREAD_METADATA.get().addToTab(tabName, key, value);
      }
docs: Add a key value pair to a metadata tab just for this thread.
  
  @param tabName the name of the tab to add the key value pair to
  @param key     the key of the metadata to add
  @param value   the metadata value to add