[BUG] Incorrect function name `hasListingBecomeGhosted`

[LanfordCai]

Current Behavior

        /// hasListingBecomeGhosted
        /// Tells whether listed NFT is present in provided capability.
        /// If it returns `false` then it means listing becomes ghost or sold out.
        pub fun hasListingBecomeGhosted(): Bool {
            if let providerRef = self.nftProviderCapability.borrow() {
                let availableIDs = providerRef.getIDs()
                return availableIDs.contains(self.details.nftID)
            }
            return false
        }

If this function returns false then it means listing becomes ghost or sold out.

Expected Behavior

But the name of the function is hasListingBecomeGhosted... Intuitively, it should return TRUE rather than FALSE when the listing has become ghosted or sold out.