code: func (a *FiltersAggregation) Filters(filters ...Query) *FiltersAggregation {
  	if len(filters) > 0 {
  		a.unnamedFilters = append(a.unnamedFilters, filters...)
  	}
  	return a
  }
docs: // Filters adds one or more unnamed filters. Notice that you can
  // either use named or unnamed filters, but not both.