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
            JAVA_CODE_REFERENCE
              IDENTIFIER
              REFERENCE_PARAMETER_LIST
                <empty list>
          WHITE_SPACE
          IDENTIFIER
        RPARENTH
      THROWS_LIST
        <empty list>
      WHITE_SPACE
      CODE_BLOCK
        LBRACE
        WHITE_SPACE
        SWITCH_STATEMENT
          SWITCH_KEYWORD
          WHITE_SPACE
          LPARENTH
          REFERENCE_EXPRESSION
            REFERENCE_PARAMETER_LIST
              <empty list>
            IDENTIFIER
          RPARENTH
          WHITE_SPACE
          CODE_BLOCK
            LBRACE
            WHITE_SPACE
            SWITCH_LABEL_STATEMENT
              CASE_KEYWORD
              WHITE_SPACE
              CASE_LABEL_ELEMENT_LIST
                TYPE_TEST_PATTERN
                  PATTERN_VARIABLE
                    MODIFIER_LIST
                      <empty list>
                    TYPE
                      JAVA_CODE_REFERENCE
                        IDENTIFIER
                        REFERENCE_PARAMETER_LIST
                          <empty list>
                    WHITE_SPACE
                    IDENTIFIER
              ERROR_ELEMENT
                <empty list>
            WHITE_SPACE
            RBRACE
        WHITE_SPACE
        RBRACE
    WHITE_SPACE
    RBRACE