code: func (form Form) GetParamsSlice(name string) ([]Params, bool) {
  	if val, exist := form[name]; exist {
  		pars := make([]Params, len(val))
  		ok := true
  
  		for i := range val {
  			pars[i], ok = val[i].(Form)
  
  			if !ok {
  				return nil, false
  			}
  		}
  
  		return pars, true
  	}
  
  	return nil, false
  }
docs: // GetParamsSlice returns slice of nested param