code: protected String qualifyAttribute(String name)
              throws JspException
      {
          if (name == null)
              return null;
  
          // if this is a Struts style name, convert it to an expression
          try {
              name = formRewriter.rewriteName(name, this);
          }
          catch (ExpressionEvaluationException e) {
              String s = Bundle.getString("Tags_DataSourceExpressionError", new Object[]{name, e.toString()});
              registerTagError(s, null);
          }
          return name;
      }
docs: An internal method that allows a tag to qualify the <code>name</code> paramater by converting
  it from a struts style naming convention to an explicit databinding expression.  The qualified
  name will be returned. This method may report an error if there is an error in the expression.
  @param name the name to be qualified
  @return the name which has been qualified
  @throws JspException throws a JspException if in-page error reporting is turned off.
  @see org.apache.beehive.netui.tags.naming.FormDataNameInterceptor