java.FILE
  IMPORT_LIST
    <empty list>
  CLASS
    MODIFIER_LIST
      PUBLIC_KEYWORD
    WHITE_SPACE
    CLASS_KEYWORD
    WHITE_SPACE
    IDENTIFIER
    TYPE_PARAMETER_LIST
      <empty list>
    EXTENDS_LIST
      <empty list>
    IMPLEMENTS_LIST
      <empty list>
    WHITE_SPACE
    LBRACE
    WHITE_SPACE
    FIELD
      MODIFIER_LIST
        PUBLIC_KEYWORD
        WHITE_SPACE
        STATIC_KEYWORD
        WHITE_SPACE
        FINAL_KEYWORD
      WHITE_SPACE
      TYPE
        BOOLEAN_KEYWORD
      WHITE_SPACE
      IDENTIFIER
      WHITE_SPACE
      EQ
      WHITE_SPACE
      BINARY_EXPRESSION
        BINARY_EXPRESSION
          REFERENCE_EXPRESSION
            REFERENCE_PARAMETER_LIST
              <empty list>
            IDENTIFIER
          WHITE_SPACE
          NE
          WHITE_SPACE
          LITERAL_EXPRESSION
            NULL_KEYWORD
        WHITE_SPACE
        ANDAND
        WHITE_SPACE
        BINARY_EXPRESSION
          METHOD_CALL_EXPRESSION
            REFERENCE_EXPRESSION
              METHOD_CALL_EXPRESSION
                REFERENCE_EXPRESSION
                  REFERENCE_EXPRESSION
                    REFERENCE_PARAMETER_LIST
                      <empty list>
                    IDENTIFIER
                  DOT
                  REFERENCE_PARAMETER_LIST
                    <empty list>
                  IDENTIFIER
                EXPRESSION_LIST
                  LPARENTH
                  RPARENTH
              DOT
              REFERENCE_PARAMETER_LIST
                <empty list>
              IDENTIFIER
            EXPRESSION_LIST
              LPARENTH
              LITERAL_EXPRESSION
                STRING_LITERAL
              RPARENTH
          WHITE_SPACE
          GE
          WHITE_SPACE
          LITERAL_EXPRESSION
            INTEGER_LITERAL
      SEMICOLON
    WHITE_SPACE
    RBRACE