COMPILATION_UNIT -> COMPILATION_UNIT [1:1]
|--PACKAGE_DEF -> package [1:1]
| |--ANNOTATIONS -> ANNOTATIONS [1:40]
| |--DOT -> . [1:40]
| | |--DOT -> . [1:29]
| | | |--DOT -> . [1:23]
| | | | |--DOT -> . [1:12]
| | | | | |--IDENT -> com [1:9]
| | | | | `--IDENT -> puppycrawl [1:13]
| | | | `--IDENT -> tools [1:24]
| | | `--IDENT -> checkstyle [1:30]
| | `--IDENT -> grammar [1:41]
| `--SEMI -> ; [1:48]
`--ENUM_DEF -> ENUM_DEF [3:1]
|--MODIFIERS -> MODIFIERS [3:1]
| `--LITERAL_PUBLIC -> public [3:1]
|--ENUM -> enum [3:8]
|--IDENT -> InputRegressionJavaEnum2 [3:13]
`--OBJBLOCK -> OBJBLOCK [3:38]
|--LCURLY -> { [3:38]
`--RCURLY -> } [4:1]