RaCoCo result: Red::ResultSeqSeq

# Red::ResultSeqSeq 36.3%

    use Red::AST;
    use Red::Model;
    use Red::AST::Infixes;
    use Red::AST::Value;

    =head2 Red::ResultSeqSeq

    #| Represents a Seq of ResultSeqs
    unit class Red::ResultSeqSeq does Positional;

    has     $.rs    is required;
    has Int $.size  is required = 1;

    #| run SQL query to get how many elements
    method elems {
        ($!rs.elems / $!size).ceiling
    }

    #| return a ResultSeq for that index
    method AT-POS($key) {
        $!rs.from($key * $!size).head: $!size
    }

    method iterator {
        gather for 0 .. $.elems { take self.AT-POS: $_ }.iterator
    }

    method gist {
        "[{self.map({ "{ .gist }" }).join: ", "}]"
    }