COMPILATION_UNIT -> COMPILATION_UNIT [1:0]
|--PACKAGE_DEF -> package [1:0]
|   |--ANNOTATIONS -> ANNOTATIONS [1:47]
|   |--DOT -> . [1:47]
|   |   |--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]
|   |   `--IDENT -> comments [1:48]
|   `--SEMI -> ; [1:56]
`--CLASS_DEF -> CLASS_DEF [2:0]
    |--MODIFIERS -> MODIFIERS [2:0]
    |   `--LITERAL_PUBLIC -> public [2:0]
    |--LITERAL_CLASS -> class [2:7]
    |--BLOCK_COMMENT_BEGIN -> /* [2:13]
    |   |--COMMENT_CONTENT -> \n    i'mcomment567\n     [2:15]
    |   `--BLOCK_COMMENT_END -> */ [4:4]
    |--IDENT -> InputComments1 [5:0]
    `--OBJBLOCK -> OBJBLOCK [6:0]
        |--LCURLY -> { [6:0]
        |--SINGLE_LINE_COMMENT -> // [6:2]
        |   `--COMMENT_CONTENT ->  comment to left curly brace\n [6:4]
        `--RCURLY -> } [7:0]
