package FloorWax;
sub new {bless {}, shift}
sub init {
    my $self = shift;
    my %arg = FW_massage @_;
    @$self{keys %arg} = values %arg;
    $self
}
package DessertTopping;
sub new {bless {}, shift}
sub init {
    my $self = shift;
    my %arg = DT_massage @_;
    @$self{keys %arg} = values %arg;
    $self
}