Constructs a RefreshingSessionAWSCredentials object.
            AmazonSecurityTokenService is created from passed-in credentials and
            is used to refresh credentials.
            
            Passed-in AWSCredentials cannot be session credentials.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public RefreshingSessionAWSCredentials( AWSCredentials stsCredentials )
 Parameters
 Parameters- stsCredentials (AWSCredentials)
- Credentials to use to create STS client