Safe way to provide default values for props?

DefaultValue.fusion

prototype(Vendor.Site:MyComponent) < prototype(Neos.Fusion:Component) {
    myProp.@process.default = Vendor.Site:DefaultValue {
        value = 'myValue'
    }
}

prototype(Vendor.Site:DefaultValue) {
    @if.noValueProvided = ${!value}
}