private FileData<METADATATYPE> getParentFileData(FileData<METADATATYPE> file) {
		GFile parentGFile = file.file.getParentFile();
		return parentGFile != null ? fileToEntryMap.get(parentGFile) : null;
	}
If supplied file is a symlink, converts the supplied file into the targeted file, otherwise
just returns the original file.
  
@param file {@link GFile} to convert
@return symlink targeted {@link GFile}, or original file it not a symlink, or null if
symlink path was invalid or reached outside the bounds of this file system
@throws IOException if symlinks are nested too deeply
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/FileSystemIndexHelper.java