test.java.file
  LBRACE
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  METHOD
    MODIFIER_LIST
      DEFAULT_KEYWORD
    TYPE_PARAMETER_LIST
      <empty list>
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    TYPE
      INT_KEYWORD
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    IDENTIFIER
    PARAMETER_LIST
      LPARENTH
      RPARENTH
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    THROWS_LIST
      THROWS_KEYWORD
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      JAVA_CODE_REFERENCE
        IDENTIFIER
        REFERENCE_PARAMETER_LIST
          <empty list>
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    CODE_BLOCK
      LBRACE
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      RETURN_STATEMENT
        RETURN_KEYWORD
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        LITERAL_EXPRESSION
          INTEGER_LITERAL
        SEMICOLON
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      RBRACE
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  RBRACE