SOURCE_FILE
  FN
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "foo"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        WHITESPACE "\n    "
        SEMICOLON ";"
        SEMICOLON ";"
        SEMICOLON ";"
        EXPR_STMT
          CALL_EXPR
            PATH_EXPR
              PATH
                PATH_SEGMENT
                  NAME_REF
                    IDENT "some_expr"
            ARG_LIST
              L_PAREN "("
              R_PAREN ")"
          SEMICOLON ";"
        SEMICOLON ";"
        SEMICOLON ";"
        SEMICOLON ";"
        EXPR_STMT
          BLOCK_EXPR
            STMT_LIST
              L_CURLY "{"
              SEMICOLON ";"
              SEMICOLON ";"
              SEMICOLON ";"
              R_CURLY "}"
          SEMICOLON ";"
        SEMICOLON ";"
        SEMICOLON ";"
        SEMICOLON ";"
        CALL_EXPR
          PATH_EXPR
            PATH
              PATH_SEGMENT
                NAME_REF
                  IDENT "Ok"
          ARG_LIST
            L_PAREN "("
            TUPLE_EXPR
              L_PAREN "("
              R_PAREN ")"
            R_PAREN ")"
        WHITESPACE "\n"
        R_CURLY "}"
  WHITESPACE "\n"
