An ordered list of uniquely identifiable forms. The identifiers are automatically assigned and managed.

An identifier is represented by a non-negative integer.

Create an empty list of forms.

Create an ordered list of uniquely identifiable forms derived from the given list of forms.

Get the value of a property associated with the form identified by the given identifier.

If the form with the given identifier cannot be found then Nothing is returned.

Set the value of a property associated with the form identified by the given identifier.

If the form with the given identifier cannot be found then no change is made.

Modify the value of a property associated with the form identified by the given identifier.

If the form with the given identifier cannot be found then no change is made.

Update the value of a property associated with the form identified by the given identifier.

If the form with the given identifier cannot be found then no change is made.

Add a form to the start of the list.

Add a form to the end of the list.

Remove the form identified by the given identifier.

If the form with the given identifier cannot be found then no change is made.