SOURCE_FILE
  FN
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "foo"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    WHITESPACE " "
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        WHITESPACE "\n    "
        EXPR_STMT
          METHOD_CALL_EXPR
            CLOSURE_EXPR
              PARAM_LIST
                PIPE "|"
                PIPE "|"
              WHITESPACE " "
              RANGE_EXPR
                DOT2 ".."
            WHITESPACE " "
            DOT "."
            NAME_REF
              IDENT "method"
            ARG_LIST
              L_PAREN "("
              R_PAREN ")"
          SEMICOLON ";"
        WHITESPACE "\n    "
        EXPR_STMT
          FIELD_EXPR
            CLOSURE_EXPR
              PARAM_LIST
                PIPE "|"
                PIPE "|"
              WHITESPACE " "
              RANGE_EXPR
                DOT2 ".."
            WHITESPACE " "
            DOT "."
            NAME_REF
              IDENT "field"
          SEMICOLON ";"
        WHITESPACE "\n"
        R_CURLY "}"
  WHITESPACE "\n"
