Provides a container for ValueHosts that can be used
when working with a model or form. It works together with IValueHostsServices.
Since IValueHostsServices doesn't deal with validation services,
ValueHostsManager doesn't support ValueHosts inheriting from
ValidatableValueHostBase, including Input and Property,
as those are built for validation.
IValueHostsServices does handle conditions, so it can be shared with Conditions
that need services.
Provides a container for ValueHosts that can be used when working with a model or form. It works together with IValueHostsServices. Since IValueHostsServices doesn't deal with validation services, ValueHostsManager doesn't support ValueHosts inheriting from ValidatableValueHostBase, including Input and Property, as those are built for validation. IValueHostsServices does handle conditions, so it can be shared with Conditions that need services.