@Override
	public String getDescription() {
		if (fullDescription == null) {
			fullDescription = Objects.requireNonNullElse(description, "");

			// add prettified extensions to the description string
			fullDescription += " (";
			fullDescription += extensions.isEmpty()
					? "*.*"
					: extensions.stream().map(s -> "*." + s).collect(Collectors.joining(","));
			fullDescription += ")";
		}
		return fullDescription;
	}
Return true if this file should be shown in the directory pane,
false if it shouldn't.

Files that begin with "." are ignored.

@see FileFilter#accept
Ghidra/Framework/Gui/src/main/java/ghidra/util/filechooser/ExtensionFileFilter.java