java.FILE
  IMPORT_LIST
    <empty list>
  CLASS
    MODIFIER_LIST
      <empty list>
    CLASS_KEYWORD
    WHITE_SPACE
    IDENTIFIER
    TYPE_PARAMETER_LIST
      <empty list>
    EXTENDS_LIST
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    IMPLEMENTS_LIST
      <empty list>
    LBRACE
    WHITE_SPACE
    CLASS_INITIALIZER
      MODIFIER_LIST
        <empty list>
      CODE_BLOCK
        LBRACE
        WHITE_SPACE
        RETURN_STATEMENT
          RETURN_KEYWORD
          WHITE_SPACE
          INSTANCE_OF_EXPRESSION
            REFERENCE_EXPRESSION
              REFERENCE_PARAMETER_LIST
                <empty list>
              IDENTIFIER
            WHITE_SPACE
            INSTANCEOF_KEYWORD
            WHITE_SPACE
            TYPE
              JAVA_CODE_REFERENCE
                IDENTIFIER
                REFERENCE_PARAMETER_LIST
                  <empty list>
          SEMICOLON
        WHITE_SPACE
        RBRACE
    WHITE_SPACE
    RBRACE