sub mediate {
	my ($self, $sub, $type, @args) = @_;

	if ($type eq 'A') {
		$self->mediate_action($sub, @args);
	} elsif ($type eq 'D') {
		$self->mediate_document($sub, @args); # 366
	} elsif ($type eq 'O') {
		$self->mediate_operation($sub, @args);
	} elsif ($type eq 'P') {
		$self->mediate_property($sub, @args);
	} else {
		die "What in the ...?";
	}
}