SumType combining all the different annotations (UDAs) that can be added to
a model field, in a serializable format. (e.g. the lambdas are moved into a
helper field in the model description and these annotations only contain an
integer to reference it)
Returns true if the other annotation can be used together with this one.
Must not call on itself, only on other instances. (which may be the same
attribute however)
SumType combining all the different annotations (UDAs) that can be added to a model field, in a serializable format. (e.g. the lambdas are moved into a helper field in the model description and these annotations only contain an integer to reference it)