code: public CmsLockFilter filterType(CmsLockType type) {
  
          CmsLockFilter filter = (CmsLockFilter)clone();
          filter.m_types.add(type);
          return filter;
      }
docs: Returns an extended filter with the given type restriction.<p>
  
  @param type the lock type to filter
  
  @return an extended filter with the given type restriction