public void setSignInConfig(SignInConfig signInConfig) {
        this.signInConfig = signInConfig;
    }
<p>
The distribution that determines which Amazon Web Services Regions should be used to sign in agents in to both
the instance and its replica(s).
</p>

@param signInConfig
       The distribution that determines which Amazon Web Services Regions should be used to sign in agents in to
       both the instance and its replica(s).
aws-java-sdk-connect/src/main/java/com/amazonaws/services/connect/model/UpdateTrafficDistributionRequest.java