use overload
	'""'     => sub { shift->{'name_lc'} },
	fallback => 1;
[...]
sub new {
	my ($class, $name) = @_;
	return $class->SUPER::new(
		{
			name        => $name,
			name_lc     => lc($name),
			_groups     => {},
			placeholder => '?'
		}
	);
}

sub name_lc { shift->{'name_lc'} }