method
insertAll

void insertAll(
int index,
Iterable<E> iterable
)

Inserts all objects of [iterable] at position [index] in this list.

This increases the length of the list by the length of [iterable] and shifts all later objects towards the end of the list.

An error occurs if the [index] is less than 0 or greater than length. An [UnsupportedError] occurs if the list is fixed-length.