code: public boolean setMarginMirroringTopBottom(boolean marginMirroringTopBottom) {
          this.marginMirroringTopBottom = marginMirroringTopBottom;
          DocListener listener;
  		for (Iterator iterator = listeners.iterator(); iterator.hasNext();) {
              listener = (DocListener) iterator.next();
              listener.setMarginMirroringTopBottom(marginMirroringTopBottom);
          }
          return true;
      }
docs: Set the margin mirroring. It will mirror top/bottom margins for odd/even pages.
  <p>
  Note: it will not work with {@link Table}.
  
  @param marginMirroringTopBottom
  <CODE>true</CODE> to mirror the margins
  @return always <CODE>true</CODE>
  @since	2.1.6