public MergeDeveloperIdentitiesRequest withDestinationUserIdentifier(String destinationUserIdentifier) {
        setDestinationUserIdentifier(destinationUserIdentifier);
        return this;
    }
<p>
User identifier for the destination user. The value should be a <code>DeveloperUserIdentifier</code>.
</p>

@param destinationUserIdentifier
       User identifier for the destination user. The value should be a <code>DeveloperUserIdentifier</code>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cognitoidentity/src/main/java/com/amazonaws/services/cognitoidentity/model/MergeDeveloperIdentitiesRequest.java