public T remove(long key) {
    	int index = indexer.remove(key);
        if (index < 0) {
            return null;
        }
        T obj = values[index];
        values[index] = null;
        return obj;
    }
Removes a key from the hashtable
@param key key to be removed from the hashtable.
@return Object removed from cache.  A null could be returned if either
the key was not found or a null had been stored for the specified key.
Ghidra/Framework/Generic/src/main/java/ghidra/util/datastruct/LongObjectHashtable.java