code: @Deprecated
      public @Nonnull
      String getMessage(String key) {
          BugPattern bugPattern = DetectorFactoryCollection.instance().lookupBugPattern(key);
          if (bugPattern == null) {
              return L10N.getLocalString("err.missing_pattern", "Error: missing bug pattern for key") + " " + key;
          }
          return bugPattern.getAbbrev() + ": " + bugPattern.getLongDescription();
      }
docs: Get a message string. This is a format pattern for describing an entire
  bug instance in a single line.
  
  @param key
  which message to retrieve