List<String> getTypeVars() {
		Set<String> typevars = new HashSet<>();
		for (PythonTypeStubType type : getTypes()) {
			typevars.addAll(type.getTypeVars());
		}
		List<String> res = new ArrayList<>(typevars);
		res.sort(null);
		return res;
	}
Gets a list of all the TypeVars needed by the types in this package

@return a list of all the needed TypeVars
GhidraBuild/BuildFiles/Doclets/src/main/java/ghidra/doclets/typestubs/PythonTypeStubPackage.java