static void searchLevel0(File rootDir, SymbolStore symbolStore, SymbolFileInfo symbolFileInfo,
			Set<FindOption> options, List<SymbolFileLocation> matches, TaskMonitor monitor) {

		File f = new File(rootDir, symbolFileInfo.getName());
		if (!f.isFile()) {
			return;
		}
		SymbolFileInfo fileInfo = SymbolFileInfo.fromFile(f, monitor);
		if (fileInfo != null) {
			if (hasSymbolFileInfoMatch(symbolFileInfo, fileInfo, options)) {
				matches.add(new SymbolFileLocation(f.getName(), symbolStore, fileInfo));
			}
		}
	}
Non-task monitor variant of {@link #isValid(TaskMonitor)}.

@return boolean true if this is a valid symbol store
Ghidra/Features/PDB/src/main/java/pdb/symbolserver/LocalSymbolStore.java