java.FILE
  IMPORT_LIST
    <empty list>
  CLASS
    MODIFIER_LIST
      <empty list>
    ENUM_KEYWORD
    WHITE_SPACE
    IDENTIFIER
    TYPE_PARAMETER_LIST
      <empty list>
    EXTENDS_LIST
      <empty list>
    IMPLEMENTS_LIST
      <empty list>
    WHITE_SPACE
    LBRACE
    WHITE_SPACE
    ENUM_CONSTANT
      MODIFIER_LIST
        <empty list>
      IDENTIFIER
      EXPRESSION_LIST
        LPARENTH
        LITERAL_EXPRESSION
          INTEGER_LITERAL
        RPARENTH
      WHITE_SPACE
      ENUM_CONSTANT_INITIALIZER
        LBRACE
        WHITE_SPACE
        RBRACE
    COMMA
    WHITE_SPACE
    ENUM_CONSTANT
      MODIFIER_LIST
        <empty list>
      IDENTIFIER
      EXPRESSION_LIST
        <empty list>
      WHITE_SPACE
      ENUM_CONSTANT_INITIALIZER
        LBRACE
        WHITE_SPACE
        METHOD
          MODIFIER_LIST
            <empty list>
          TYPE_PARAMETER_LIST
            <empty list>
          TYPE
            VOID_KEYWORD
          WHITE_SPACE
          IDENTIFIER
          PARAMETER_LIST
            LPARENTH
            RPARENTH
          THROWS_LIST
            <empty list>
          WHITE_SPACE
          CODE_BLOCK
            LBRACE
            RBRACE
        WHITE_SPACE
        RBRACE
    WHITE_SPACE
    RBRACE