public void setDeveloperProviderName(String developerProviderName) {
        this.developerProviderName = developerProviderName;
    }
<p>
The "domain" by which Cognito will refer to your users. This is a (pseudo) domain name that you provide while
creating an identity pool. This name acts as a placeholder that allows your backend and the Cognito service to
communicate about the developer provider. For the <code>DeveloperProviderName</code>, you can use letters as well
as period (.), underscore (_), and dash (-).
</p>

@param developerProviderName
       The "domain" by which Cognito will refer to your users. This is a (pseudo) domain name that you provide
       while creating an identity pool. This name acts as a placeholder that allows your backend and the Cognito
       service to communicate about the developer provider. For the <code>DeveloperProviderName</code>, you can
       use letters as well as period (.), underscore (_), and dash (-).
aws-java-sdk-cognitoidentity/src/main/java/com/amazonaws/services/cognitoidentity/model/MergeDeveloperIdentitiesRequest.java