Fix equals test to use two wrapped containers.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Add helper methods to convert from Properties to Map.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Fix or document ignored exceptions.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>