Create a client for the Amazon Route53 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 AmazonRoute53 CreateAmazonRoute53Client()
 Return Value
 Return ValueAn Amazon Route53 client
 Remarks
 Remarks