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报道援引联合反恐小组一名不愿透露姓名的高级官员的话说，警方在邦迪滩两名枪手车内发现一面“伊斯兰国”旗帜。澳大利亚安全情报组织6年前就已在调查邦迪滩枪击案两名枪手之一的纳维德·阿克拉姆，他与“伊斯兰国”在悉尼的恐怖分子有密切联系。
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A difficulty here, however, is that the TransformStreamDefaultController does not have a ready promise mechanism like Writers do; so the TransformStream implementation would need to implement a polling mechanism to periodically check when controller.desiredSize becomes positive again.