Is exist way to repeat pair of fields without creating new type?
I mean repeating two fields in order: index, value without creating a new type as follows:
```yaml
seq:
    - id: qualifier_field
      type: qualifier_field_type

    - id: num_of_items
      type: u2le
    
    - id: points
      type: point_type
      
      repeat: expr
      repeat-expr: num_of_items
```
where point_type is:
```yaml 
  point_type:
    seq:
      - id: index
        type: u2
      - id: value
        type: u4
```
Maybe it would be a good idea to create a repeat loop start and end character?
For example:
```yaml
seq:
    - id: qualifier_field
      type: qualifier_field_type

    - id: num_of_items
      type: u2le
    seq_loop:
     - id: index
        type: u2
     - id: value
        type: u4
    seq_loop_end:   
      repeat: expr
      repeat-expr: num_of_items

```