HierachicalINIConfiguration section access without dotted notation

Setting section properties of previously non-existent Sections using getSection().setProperty() fails.

Using a non existing filename for f, the following produces an empty file.

ini = HierarchicalINIConfiguration(f)
section = ini.getSection("section")
section.setProperty("foo", "bar")
ini.save()

Accessing SubnodeConfigurations after clearing them fails.

using an existing file with an existing section, produces an empty file.

ini = new HierarchicalINIConfiguration(f);
subnode = ini.getSection("section");
if (! subnode.isEmpty() ) {
subnode.clear();
}
subnode.setProperty("foo", "bar");
ini.save();