java.FILE
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  CLASS
    MODIFIER_LIST
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    CLASS_KEYWORD
    WHITE_SPACE
    IDENTIFIER
    TYPE_PARAMETER_LIST
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    WHITE_SPACE
    EXTENDS_LIST
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      WHITE_SPACE
      JAVA_CODE_REFERENCE
        JAVA_CODE_REFERENCE
          IDENTIFIER
          REFERENCE_PARAMETER_LIST
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        DOT
        IDENTIFIER
        REFERENCE_PARAMETER_LIST
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    IMPLEMENTS_LIST
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    WHITE_SPACE
    LBRACE
    WHITE_SPACE
    METHOD
      MODIFIER_LIST
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      TYPE_PARAMETER_LIST
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      IDENTIFIER
      PARAMETER_LIST
        LPARENTH
        PARAMETER
          MODIFIER_LIST
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          TYPE
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              IDENTIFIER
              REFERENCE_PARAMETER_LIST
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          WHITE_SPACE
          IDENTIFIER
        RPARENTH
      THROWS_LIST
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      WHITE_SPACE
      CODE_BLOCK
        LBRACE
        WHITE_SPACE
        EXPRESSION_STATEMENT
          METHOD_CALL_EXPRESSION
            REFERENCE_EXPRESSION
              REFERENCE_EXPRESSION
                REFERENCE_PARAMETER_LIST
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                IDENTIFIER
              DOT
              REFERENCE_PARAMETER_LIST
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              LITERAL_EXPRESSION
                INTEGER_LITERAL
              RPARENTH
          SEMICOLON
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        RBRACE
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    RBRACE