$corona = {
            # Alter ego for properties from ClassA
            ClassA    =>  {
                             foo => 'foo',
                             bar => 'bar'
                          },
            # Alter ego for properties from ClassB
            ClassB    =>  {
                             baz => 'baz',
                             foo => 'foo'   # Doesn't interfere with the foo property from ClassA
            }
       }