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
        <empty list>
      TYPE_PARAMETER_LIST
        <empty list>
      TYPE
        VOID_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
        DECLARATION_STATEMENT
          RECORD
          ERROR_ELEMENT
            <empty list>
        WHITE_SPACE
        IF_STATEMENT
          IF_KEYWORD
          WHITE_SPACE
          LPARENTH
          BINARY_EXPRESSION
            REFERENCE_EXPRESSION
              REFERENCE_PARAMETER_LIST
                <empty list>
              IDENTIFIER
            WHITE_SPACE
            GT
            WHITE_SPACE
            LITERAL_EXPRESSION
              INTEGER_LITERAL
          RPARENTH
          WHITE_SPACE
          BLOCK_STATEMENT
            CODE_BLOCK
              LBRACE
              RBRACE
        WHITE_SPACE
        RBRACE
    WHITE_SPACE
    RBRACE