code: private FilterList getExtPropertyFilters(EntityMetadata m, FilterList filterList)
      {
          Filter filter = getFilter(m.getTableName());
          if (filter != null)
          {
              if (filterList == null)
              {
                  filterList = new FilterList();
              }
              filterList.addFilter(filter);
          }
          return filterList;
      }
docs: Gets the ext property filters.
  
  @param m
  the m
  @param filterList
  the filter list
  @return the ext property filters