test.java.file
  TYPE_PARAMETER_LIST
    LT
    TYPE_PARAMETER
      IDENTIFIER
      WHITE_SPACE
      EXTENDS_BOUND_LIST
        EXTENDS_KEYWORD
        WHITE_SPACE
        JAVA_CODE_REFERENCE
          IDENTIFIER
          REFERENCE_PARAMETER_LIST
            <empty list>
    COMMA
    WHITE_SPACE
    TYPE_PARAMETER
      IDENTIFIER
      EXTENDS_BOUND_LIST
        <empty list>
    GT