NestedResultOptionUtcDateTimeIterable # Bases: object __iter__() # Implement iter(self). __len__() # Return len(self). __repr__() # Return repr(self). collect() # Materialise the iterable as a nested list of optional datetimes, raising if any element produced an error. Returns: Type Description list[list[Optional[datetime]]] one inner list per outer element (entries are None where absent).