pub trait StorageClassExt: ResourceBuilder {
    // Required methods
    fn with_provisioner(name: impl ToString, provisioner: impl ToString) -> Self;
    fn allow_volume_expansion(self, yes: bool) -> Self;
    fn mount_options(
        self,
        options: impl IntoIterator<Item = impl ToString>
    ) -> Self;
    fn parameters(
        self,
        parameters: impl IntoIterator<Item = (impl ToString, impl ToString)>
    ) -> Self;
    fn retain(self) -> Self;
    fn delete(self) -> Self;
    fn immediate(self) -> Self;
    fn wait_for_first_consumer(self) -> Self;
}