parse JSONList
Converts an already-decoded JSON value, typically a List produced by parseJSON, into a List of klass instances, with the NoneableDouble/NoneableLong adapters registered so numeric-or-"None" fields decode correctly.
Return
the decoded list
Parameters
<U>
the element type to decode each list entry into
object
the already-decoded JSON value, expected to be a List
klass
the class to decode each element into
Throws
if object is null