EXPR_STMT@0..18
  MACRO_CALL@0..17
    PATH@0..2
      PATH_SEGMENT@0..2
        NAME_REF@0..2
          IDENT@0..2 "m1"
    BANG@2..3 "!"
    TOKEN_TREE@3..17
      L_CURLY@3..4 "{"
      WHITESPACE@4..5 " "
      LET_KW@5..8 "let"
      WHITESPACE@8..9 " "
      IDENT@9..10 "a"
      WHITESPACE@10..11 " "
      EQ@11..12 "="
      WHITESPACE@12..13 " "
      INT_NUMBER@13..14 "0"
      SEMICOLON@14..15 ";"
      WHITESPACE@15..16 " "
      R_CURLY@16..17 "}"
  SEMICOLON@17..18 ";"