code: String getPreparedStatementText(ControlBeanContext context, Method m, Object[] args) {
          StringBuilder sb = new StringBuilder();
          for (SqlFragment sf : _children) {
              sb.append(sf.getPreparedStatementText(context, m, args));
          }
          return sb.toString();
      }
docs: builds the text of the prepared statement
  
  @param context A ControlBeanContext instance.
  @param m The annotated method.
  @param args The method's parameters.
  @return The PreparedStatement text generated by this fragment and its children.