public void setVirtualServices(java.util.Collection<VirtualServiceRef> virtualServices) {
        if (virtualServices == null) {
            this.virtualServices = null;
            return;
        }

        this.virtualServices = new java.util.ArrayList<VirtualServiceRef>(virtualServices);
    }
<p>
The list of existing virtual services for the specified service mesh.
</p>

@param virtualServices
       The list of existing virtual services for the specified service mesh.
aws-java-sdk-appmesh/src/main/java/com/amazonaws/services/appmesh/model/ListVirtualServicesResult.java