@Override
		public void close() {
			fce = null;
			super.hardClose();
		}
Helper class, keeps a FileCacheEntry pinned while the ByteProvider is alive.  When
the ByteProvider is closed, the FileCacheEntry is allowed to be garbage collected
if there is enough memory pressure to also remove its entry from the {@link FileCache#memCache}
map.
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/FileCache.java