find
Helper to simplify finding a single Command items according to a Predicate.
Return
the Command item with CommandData values matching the predicate and clazz restrictions.
Parameters
clazz
The class type used for filtering via an Class.isInstance check. clazz must be an extension of CommandData.
predicate
A filtering function taking a CommandData item of type T and returning true if it should be included in the list. The class filtering is applied before the predicate.
Throws
if no items, or multiple items matched the requirements.