A foundational variable is used to complete other, non-nested variables. For example, `users`
and `user_started_case` are both foundational to `defendants`
A required variable is needed for filing, but the parsing into variables can continue without
it. An example of this is that user[0] needs an email, but none of the other users do, and
you can create the entire filing without one.
Returns the enum constant of this class with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this class. (Extraneous whitespace characters are
not permitted.)
Parameters:
name - the name of the enum constant to be returned.