COMPILATION_UNIT -> COMPILATION_UNIT [1:1]
|--PACKAGE_DEF -> package [1:1]
|   |--ANNOTATIONS -> ANNOTATIONS [1:48]
|   |--DOT -> . [1:48]
|   |   |--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]
|   |   `--IDENT -> antlr4 [1:49]
|   `--SEMI -> ; [1:55]
`--CLASS_DEF -> CLASS_DEF [3:1]
    |--MODIFIERS -> MODIFIERS [3:1]
    |   `--LITERAL_PUBLIC -> public [3:1]
    |--LITERAL_CLASS -> class [3:8]
    |--IDENT -> InputAntlr4AstRegressionPatternsInIfStatement [3:14]
    `--OBJBLOCK -> OBJBLOCK [3:60]
        |--LCURLY -> { [3:60]
        |--METHOD_DEF -> METHOD_DEF [4:5]
        |   |--MODIFIERS -> MODIFIERS [4:5]
        |   |--TYPE -> TYPE [4:5]
        |   |   `--LITERAL_VOID -> void [4:5]
        |   |--IDENT -> m1 [4:10]
        |   |--LPAREN -> ( [4:12]
        |   |--PARAMETERS -> PARAMETERS [4:13]
        |   |   `--PARAMETER_DEF -> PARAMETER_DEF [4:13]
        |   |       |--MODIFIERS -> MODIFIERS [4:13]
        |   |       |--TYPE -> TYPE [4:13]
        |   |       |   `--IDENT -> Object [4:13]
        |   |       `--IDENT -> o [4:20]
        |   |--RPAREN -> ) [4:21]
        |   `--SLIST -> { [4:23]
        |       |--LITERAL_IF -> if [5:9]
        |       |   |--LPAREN -> ( [5:12]
        |       |   |--EXPR -> EXPR [5:15]
        |       |   |   `--LITERAL_INSTANCEOF -> instanceof [5:15]
        |       |   |       |--IDENT -> o [5:13]
        |       |   |       `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF [5:26]
        |       |   |           |--MODIFIERS -> MODIFIERS [5:26]
        |       |   |           |--TYPE -> TYPE [5:26]
        |       |   |           |   `--IDENT -> String [5:26]
        |       |   |           `--IDENT -> s [5:33]
        |       |   |--RPAREN -> ) [5:34]
        |       |   `--SLIST -> { [5:36]
        |       |       `--RCURLY -> } [6:9]
        |       |--LITERAL_IF -> if [8:9]
        |       |   |--LPAREN -> ( [8:12]
        |       |   |--EXPR -> EXPR [8:35]
        |       |   |   `--LAND -> && [8:35]
        |       |   |       |--LITERAL_INSTANCEOF -> instanceof [8:15]
        |       |   |       |   |--IDENT -> o [8:13]
        |       |   |       |   `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF [8:26]
        |       |   |       |       |--MODIFIERS -> MODIFIERS [8:26]
        |       |   |       |       |--TYPE -> TYPE [8:26]
        |       |   |       |       |   `--IDENT -> String [8:26]
        |       |   |       |       `--IDENT -> s [8:33]
        |       |   |       `--GT -> > [8:49]
        |       |   |           |--METHOD_CALL -> ( [8:46]
        |       |   |           |   |--DOT -> . [8:39]
        |       |   |           |   |   |--IDENT -> s [8:38]
        |       |   |           |   |   `--IDENT -> length [8:40]
        |       |   |           |   |--ELIST -> ELIST [8:47]
        |       |   |           |   `--RPAREN -> ) [8:47]
        |       |   |           `--NUM_INT -> 6 [8:51]
        |       |   |--RPAREN -> ) [8:52]
        |       |   `--SLIST -> { [8:54]
        |       |       `--RCURLY -> } [12:9]
        |       `--RCURLY -> } [13:5]
        `--RCURLY -> } [14:1]
