o_SetBinAddingElementHashLevelCanDestroy

open override fun o_SetBinAddingElementHashLevelCanDestroy(    self: AvailObject,     elementObject: A_BasicObject,     elementObjectHash: Int,     myLevel: Int,     canDestroy: Boolean): A_SetBin

Add the given element to this bin, potentially modifying it if canDestroy is true and it's mutable. Answer the new bin. Note that the client is responsible for marking elementObject as immutable if another reference exists.