sub remote_run {
    my ($self, %args) = @_;
    $self->resource( $args{resource} ) if $args{resource};
    $self->username( $args{username} ) if $args{username};

    my $resource = $self->resource
        or die("'resource' must be provided");
    my $username = $self->username
        or die("'username' must be provided");

    # Here comes the actual code ...
}