code: public Long getToLong() {
  
          if (m_long == null) {
              try {
                  m_long = new Long(Long.parseLong(getToString()));
              } catch (NumberFormatException e) {
                  LOG.info(e.getLocalizedMessage());
              }
          }
          return m_long;
      }
docs: Parses the wrapped value to a Long integer.<p>
  
  Note that the result is an Object of type {@link java.lang.Long},
  so in case the wrapped value can not be converted to a number, <code>null</code> is returned.
  This means you can check for an <code>empty</code> result in the EL.<p>
  
  @return the Long integer value
  
  @see #getToInteger()