Called when a cache element is removed, replaces the cache items at
index "replaced"" with the one at index "replace".
The "replace" and "replaced" indices are guaranteed to be different and
valid cache item indices, i.e. less than this.length.
When this method has returned, the cache item at index "replace" won't
be used until a new cache element is added; a subclass is free to do
with it as it pleases but should be aware that it will be reused later
on.
Called when a cache element is removed, replaces the cache items at index "replaced"" with the one at index "replace".
The "replace" and "replaced" indices are guaranteed to be different and valid cache item indices, i.e. less than this.length.
When this method has returned, the cache item at index "replace" won't be used until a new cache element is added; a subclass is free to do with it as it pleases but should be aware that it will be reused later on.