java.FILE
  IMPORT_LIST
    <empty list>
  CLASS
    MODIFIER_LIST
      <empty list>
    CLASS_KEYWORD
    WHITE_SPACE
    IDENTIFIER
    TYPE_PARAMETER_LIST
      <empty list>
    EXTENDS_LIST
      <empty list>
    IMPLEMENTS_LIST
      <empty list>
    WHITE_SPACE
    LBRACE
    WHITE_SPACE
    METHOD
      MODIFIER_LIST
        PRIVATE_KEYWORD
      TYPE_PARAMETER_LIST
        <empty list>
      WHITE_SPACE
      TYPE
        INT_KEYWORD
      WHITE_SPACE
      IDENTIFIER
      PARAMETER_LIST
        LPARENTH
        PARAMETER
          MODIFIER_LIST
            <empty list>
          TYPE
            JAVA_CODE_REFERENCE
              IDENTIFIER
              REFERENCE_PARAMETER_LIST
                <empty list>
          WHITE_SPACE
          IDENTIFIER
        RPARENTH
      THROWS_LIST
        <empty list>
      WHITE_SPACE
      CODE_BLOCK
        LBRACE
        WHITE_SPACE
        RETURN_STATEMENT
          RETURN_KEYWORD
          WHITE_SPACE
          LITERAL_EXPRESSION
            INTEGER_LITERAL
          SEMICOLON
        WHITE_SPACE
        RBRACE
    WHITE_SPACE
    METHOD
      MODIFIER_LIST
        PUBLIC_KEYWORD
      TYPE_PARAMETER_LIST
        <empty list>
      WHITE_SPACE
      TYPE
        INT_KEYWORD
      WHITE_SPACE
      IDENTIFIER
      PARAMETER_LIST
        LPARENTH
        PARAMETER
          MODIFIER_LIST
            <empty list>
          TYPE
            INT_KEYWORD
          WHITE_SPACE
          IDENTIFIER
        RPARENTH
      THROWS_LIST
        <empty list>
      WHITE_SPACE
      CODE_BLOCK
        LBRACE
        WHITE_SPACE
        RETURN_STATEMENT
          RETURN_KEYWORD
          WHITE_SPACE
          REFERENCE_EXPRESSION
            REFERENCE_PARAMETER_LIST
              <empty list>
            IDENTIFIER
          SEMICOLON
        WHITE_SPACE
        RBRACE
    WHITE_SPACE
    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
      METHOD
        MODIFIER_LIST
          PUBLIC_KEYWORD
        TYPE_PARAMETER_LIST
          <empty list>
        WHITE_SPACE
        TYPE
          VOID_KEYWORD
        WHITE_SPACE
        IDENTIFIER
        PARAMETER_LIST
          LPARENTH
          RPARENTH
        THROWS_LIST
          <empty list>
        WHITE_SPACE
        CODE_BLOCK
          LBRACE
          WHITE_SPACE
          DECLARATION_STATEMENT
            LOCAL_VARIABLE
              MODIFIER_LIST
                <empty list>
              TYPE
                INT_KEYWORD
              WHITE_SPACE
              IDENTIFIER
              WHITE_SPACE
              EQ
              WHITE_SPACE
              PARENTH_EXPRESSION
                LPARENTH
                PARENTH_EXPRESSION
                  LPARENTH
                  METHOD_CALL_EXPRESSION
                    REFERENCE_EXPRESSION
                      THIS_EXPRESSION
                        JAVA_CODE_REFERENCE
                          IDENTIFIER
                          REFERENCE_PARAMETER_LIST
                            <empty list>
                        DOT
                        THIS_KEYWORD
                      DOT
                      REFERENCE_PARAMETER_LIST
                        <empty list>
                      IDENTIFIER
                    EXPRESSION_LIST
                      LPARENTH
                      METHOD_CALL_EXPRESSION
                        REFERENCE_EXPRESSION
                          REFERENCE_PARAMETER_LIST
                            <empty list>
                          IDENTIFIER
                        EXPRESSION_LIST
                          LPARENTH
                          LAMBDA_EXPRESSION
                            PARAMETER_LIST
                              LPARENTH
                              RPARENTH
                            WHITE_SPACE
                            ARROW
                            WHITE_SPACE
                            CODE_BLOCK
                              LBRACE
                              WHITE_SPACE
                              RBRACE
                          RPARENTH
                      RPARENTH
                  RPARENTH
                RPARENTH
              SEMICOLON
          WHITE_SPACE
          RBRACE
      WHITE_SPACE
      RBRACE
    WHITE_SPACE
    RBRACE