COMPILATION_UNIT -> COMPILATION_UNIT [2:1]
|--PACKAGE_DEF -> package [2:1]
|   |--ANNOTATIONS -> ANNOTATIONS [2:48]
|   |--DOT -> . [2:48]
|   |   |--DOT -> . [2:40]
|   |   |   |--DOT -> . [2:29]
|   |   |   |   |--DOT -> . [2:23]
|   |   |   |   |   |--DOT -> . [2:12]
|   |   |   |   |   |   |--IDENT -> com [2:9]
|   |   |   |   |   |   `--IDENT -> puppycrawl [2:13]
|   |   |   |   |   `--IDENT -> tools [2:24]
|   |   |   |   `--IDENT -> checkstyle [2:30]
|   |   |   `--IDENT -> grammar [2:41]
|   |   `--IDENT -> java15 [2:49]
|   `--SEMI -> ; [2:55]
|--CLASS_DEF -> CLASS_DEF [4:1]
|   |--MODIFIERS -> MODIFIERS [4:1]
|   |   |--LITERAL_PUBLIC -> public [4:1]
|   |   `--LITERAL_NON_SEALED -> non-sealed [4:8]
|   |--LITERAL_CLASS -> class [4:19]
|   |--IDENT -> InputTopLevelNonSealed [4:25]
|   |--EXTENDS_CLAUSE -> extends [4:48]
|   |   `--IDENT -> OtherClass [4:56]
|   `--OBJBLOCK -> OBJBLOCK [4:67]
|       |--LCURLY -> { [4:67]
|       `--RCURLY -> } [5:1]
`--CLASS_DEF -> CLASS_DEF [7:1]
    |--MODIFIERS -> MODIFIERS [7:1]
    |   `--LITERAL_SEALED -> sealed [7:1]
    |--LITERAL_CLASS -> class [7:8]
    |--IDENT -> OtherClass [7:14]
    `--OBJBLOCK -> OBJBLOCK [7:25]
        |--LCURLY -> { [7:25]
        `--RCURLY -> } [8:1]
