public ListVirtualServicesResult withVirtualServices(VirtualServiceRef... virtualServices) {
        if (this.virtualServices == null) {
            setVirtualServices(new java.util.ArrayList<VirtualServiceRef>(virtualServices.length));
        }
        for (VirtualServiceRef ele : virtualServices) {
            this.virtualServices.add(ele);
        }
        return this;
    }
<p>
The list of existing virtual services for the specified service mesh.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setVirtualServices(java.util.Collection)} or {@link #withVirtualServices(java.util.Collection)} if you
want to override the existing values.
</p>

@param virtualServices
       The list of existing virtual services for the specified service mesh.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-appmesh/src/main/java/com/amazonaws/services/appmesh/model/ListVirtualServicesResult.java