sub get {

    my ($self,$arg_ref) = @_;

    my $prefix = $prefix_of{ident $self};

    ### get needed parameters:
    my @values      = $arg_ref->{'values'};     # ARRAY: value1, value2,...
    my $table       = $arg_ref->{'table'};      # string
    my $where       = $arg_ref->{'where'};      # sql-string, opt
    my $sort        = $arg_ref->{'sort'};       # sql-string, opt

    ### check if alle values are filled in:
    if(!@values || !$table) {
        croak qq{
            MySQL Error: Not all needed params (value, table)
            are specified!
            value: @values
            table: $table
        };
    }

    ### transform values to
    my $sql_formed_values = join '`,`', @values;

    die $sql_formed_values; #testing

}