Create a client for the Amazon CloudTrail Service with the credentials loaded from the application's
            default configuration, and if unsuccessful from the Instance Profile service on an EC2 instance.
            
            Example App.config with credentials set. 
             CopyC#
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CopyC#<?xml version="1.0" encoding="utf-8" ?> <configuration> <appSettings> <add key="AWSAccessKey" value="********************"/> <add key="AWSSecretKey" value="****************************************"/> </appSettings> </configuration>
 Declaration Syntax
 Declaration Syntax| C# | 
public static AmazonCloudTrail CreateAmazonCloudTrailClient()
 Return Value
 Return ValueAn Amazon CloudTrail client
 Remarks
 Remarks