SOURCE_FILE
  IMPL
    IMPL_KW "impl"
    GENERIC_PARAM_LIST
      L_ANGLE "<"
      TYPE_PARAM
        NAME
          IDENT "T"
        COLON ":"
        WHITESPACE " "
        TYPE_BOUND_LIST
          TYPE_BOUND
            PATH_TYPE
              PATH
                PATH_SEGMENT
                  NAME_REF
                    IDENT "Clone"
      R_ANGLE ">"
  WHITESPACE "\n"
  IMPL
    IMPL_KW "impl"
    GENERIC_PARAM_LIST
      L_ANGLE "<"
      TYPE_PARAM
        NAME
          IDENT "T"
      R_ANGLE ">"
    WHITESPACE " "
    PATH_TYPE
      PATH
        PATH_SEGMENT
          NAME_REF
            IDENT "OnceCell"
          GENERIC_ARG_LIST
            L_ANGLE "<"
            TYPE_ARG
              PATH_TYPE
                PATH
                  PATH_SEGMENT
                    NAME_REF
                      IDENT "T"
            R_ANGLE ">"
    WHITESPACE " "
    ASSOC_ITEM_LIST
      L_CURLY "{"
      R_CURLY "}"
  WHITESPACE "\n"
error 14: expected trait or type
error 14: expected `{`