public synchronized void setMetadata(GFile f, METADATATYPE metaData) throws IOException {
		FileData<METADATATYPE> fileData = getFileData(f);
		fileData.metaData = metaData;
	}
Sets the associated metadata blob for the specified file.

@param f GFile to update
@param metaData new metadata blob
@throws IOException if unknown file
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/FileSystemIndexHelper.java