docs: public boolean accept(String kind, String mimetype) {
  
          if (m_includeAll) {
              return true;
          }
          int slashpos = mimetype.indexOf("/");
          String supertype = mimetype.substring(0, slashpos);
          return m_kinds.contains(kind) || m_types.contains(mimetype) || m_supertypes.contains(supertype);
      }