Values.DeliveryOptionsSourceUsed to associate a configuration set with a dedicated IP pool.
type nonrec t = {tlsPolicy : TlsPolicy.t option;Specifies whether messages that use the configuration set are required to use Transport Layer Security (TLS). If the value is Require, messages are only delivered if a TLS connection can be established. If the value is Optional, messages can be delivered in plain text if a TLS connection can't be established.
*)sendingPoolName : PoolName.t option;The name of the dedicated IP pool that you want to associate with the configuration set.
*)}val to_value :
t ->
[> `Structure of (string * [> `Enum of string | `String of PoolName.t ]) list ]