instance method create_variants

# File activestorage/app/models/active_storage/attachment.rb, line 205
    def create_variants
      return unless representable?

      immediate_variants = []
      later_variants     = []

      named_variants.each do |_name, named_variant|
        case named_variant.process(record)
        when :immediately
          # Skip if already processed from local io in uploaded()
          immediate_variants << named_variant.transformations unless immediate_variants_processed
        when :later
          later_variants << named_variant.transformations
        end
      end

      ActiveStorage::CreateVariantsJob.perform_now(blob, variants: immediate_variants, process: :immediately) if immediate_variants.any?
      ActiveStorage::CreateVariantsJob.perform_later(blob, variants: later_variants, process: :later) if later_variants.any?
    end