public ListServiceInstancesRequest withNextToken(String nextToken) {
        setNextToken(nextToken);
        return this;
    }
<p>
A token that indicates the location of the next service in the array of service instances, after the list of
service instances that was previously requested.
</p>

@param nextToken
       A token that indicates the location of the next service in the array of service instances, after the list
       of service instances that was previously requested.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-proton/src/main/java/com/amazonaws/services/proton/model/ListServiceInstancesRequest.java