COMPILATION_UNIT -> COMPILATION_UNIT [1:0]
|--PACKAGE_DEF -> package [1:0]
|   |--ANNOTATIONS -> ANNOTATIONS [1:39]
|   |--DOT -> . [1:39]
|   |   |--DOT -> . [1:28]
|   |   |   |--DOT -> . [1:22]
|   |   |   |   |--DOT -> . [1:11]
|   |   |   |   |   |--IDENT -> com [1:8]
|   |   |   |   |   `--IDENT -> puppycrawl [1:12]
|   |   |   |   `--IDENT -> tools [1:23]
|   |   |   `--IDENT -> checkstyle [1:29]
|   |   `--IDENT -> grammar [1:40]
|   `--SEMI -> ; [1:47]
|--IMPORT -> import [4:0]
|   |--DOT -> . [4:16]
|   |   |--DOT -> . [4:11]
|   |   |   |--IDENT -> java [4:7]
|   |   |   `--IDENT -> util [4:12]
|   |   `--IDENT -> Collection [4:17]
|   `--SEMI -> ; [4:27]
|--IMPORT -> import [5:0]
|   |--DOT -> . [5:16]
|   |   |--DOT -> . [5:11]
|   |   |   |--IDENT -> java [5:7]
|   |   |   `--IDENT -> util [5:12]
|   |   `--IDENT -> List [5:17]
|   `--SEMI -> ; [5:21]
`--INTERFACE_DEF -> INTERFACE_DEF [7:0]
    |--MODIFIERS -> MODIFIERS [7:0]
    |   `--LITERAL_PUBLIC -> public [7:0]
    |--LITERAL_INTERFACE -> interface [7:7]
    |--IDENT -> InputRegressionJavaInterface1 [7:17]
    |--EXTENDS_CLAUSE -> extends [7:47]
    |   |--IDENT -> List [7:55]
    |   |--COMMA -> , [7:59]
    |   `--IDENT -> Collection [7:61]
    `--OBJBLOCK -> OBJBLOCK [7:72]
        |--LCURLY -> { [7:72]
        `--RCURLY -> } [8:0]
