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f49d42729a
initCapacity did and still does use the ensureTotalCapacityPrecise logic because the initial capacity of an ArrayList is not important in terms of how it grows, so allocating a more exact slice up-front allows for saving memory when the array list never exceeds that initial allocation size. There are use cases where this precise capacity is useful outside of the `init` function, though, like in instances where the user does not call the `init` function themselves but otherwise knows that an ArrayList is empty so calling `ensureTotalCapacityPrecise` can give the same memory savings that `initCapacity` would have. Closes #9775