src/main/java/com/aliyun/openservices/log/Client.java [1159:1169]:
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		CodingUtils.assertParameterNotNull(request, "request");
		String project = request.GetProject();
		CodingUtils.assertStringNotNullOrEmpty(project, "project");
		String logStore = request.GetLogStore();
		String shardId = String.valueOf(request.GetShardId());
		CodingUtils.validateLogstore(logStore);
		Map<String, String> headParameter = GetCommonHeadPara(project);
        String resourceUri = "/logstores/" + logStore + "/shards/" + shardId;
		headParameter.put(Consts.CONST_CONTENT_LENGTH, String.valueOf(0));
		Map<String, String> urlParameter = request.GetAllParams();
		ResponseMessage response = new ResponseMessage();
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src/main/java/com/aliyun/openservices/log/Client.java [1185:1195]:
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		CodingUtils.assertParameterNotNull(request, "request");
		String project = request.GetProject();
		CodingUtils.assertStringNotNullOrEmpty(project, "project");
		String logStore = request.GetLogStore();
		String shardId = String.valueOf(request.GetShardId());
		CodingUtils.validateLogstore(logStore);
		Map<String, String> headParameter = GetCommonHeadPara(project);
        String resourceUri = "/logstores/" + logStore + "/shards/" + shardId;
		headParameter.put(Consts.CONST_CONTENT_LENGTH, String.valueOf(0));
		Map<String, String> urlParameter = request.GetAllParams();
		ResponseMessage response = new ResponseMessage();
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