code: public final FFDCLogger append(String[] moreLines) {
          int numLines = moreLines.length;
          for (int i = 0; i < numLines; i++)
              lines.add(moreLines[i]);
  
          return this;
      }
docs: Appends output from another FFDC self introspect method.
  
  @param moreLines the output from the other method.
  
  @return this FFDC logger.