E.g. when method returns List<? extends Number>. The kind of such type is PARAMETERIZED_TYPE,
but the first (and only) type argument is a WILDCARD_TYPE.
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.