SOURCE_FILE@0..22
  FN@0..21
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..4
      IDENT@3..4 "f"
    PARAM_LIST@4..6
      L_PAREN@4..5 "("
      R_PAREN@5..6 ")"
    WHITESPACE@6..7 " "
    BLOCK_EXPR@7..21
      L_CURLY@7..8 "{"
      WHITESPACE@8..9 " "
      EFFECT_EXPR@9..19
        UNSAFE_KW@9..15 "unsafe"
        WHITESPACE@15..16 " "
        BLOCK_EXPR@16..19
          L_CURLY@16..17 "{"
          WHITESPACE@17..18 " "
          R_CURLY@18..19 "}"
      WHITESPACE@19..20 " "
      R_CURLY@20..21 "}"
  WHITESPACE@21..22 "\n"