public void setServices(java.util.Collection<String> services) {
        if (services == null) {
            this.services = null;
            return;
        }

        this.services = new java.util.ArrayList<String>(services);
    }
<p>
The service metadata for the service or services you want to query. If not specified, all elements are returned.
</p>

@param services
       The service metadata for the service or services you want to query. If not specified, all elements are
       returned.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/GetApproximateUsageRecordsRequest.java