```ruby
require "tempfile"

module Stripe
  class FileUpload < APIResource
    extend Stripe::APIOperations::Create
    extend Stripe::APIOperations::List

    OBJECT_NAME = "file_upload".freeze

    def self.resource_url
      "/v1/files"
    end

    def self.request(method, url, params = {}, opts = {})
      opts = {
        api_base: Stripe.uploads_base,
      }.merge(Util.normalize_opts(opts))
      super
    end

    def self.create(params = {}, opts = {})
      # rest-client would accept a vanilla `File` for upload, but Faraday does
      # not. Support the old API by wrapping a `File` with an `UploadIO` object
      # if we're given one.
      if params[:file] && [File, Tempfile].any? { |klass| params[:file].is_a?(klass) }
        params[:file] = Faraday::UploadIO.new(params[:file], nil)
      end

      opts = {
        content_type: "multipart/form-data",
      }.merge(Util.normalize_opts(opts))
      super
    end
  end
end
```

Use duck typing to detect File-like objects
user
```ruby
module Stripe
  class FileUpload < APIResource
    extend Stripe::APIOperations::Create
    extend Stripe::APIOperations::List

    OBJECT_NAME = "file_upload".freeze

    def self.resource_url
      "/v1/files"
    end

    def self.request(method, url, params = {}, opts = {})
      opts = {
        api_base: Stripe.uploads_base,
      }.merge(Util.normalize_opts(opts))
      super
    end

    def self.create(params = {}, opts = {})
      # rest-client would accept a vanilla `File` for upload, but Faraday does
      # not. Support the old API by wrapping a `File`-like object with an
      # `UploadIO` object if we're given one.
      if params[:file] && params[:file].respond_to?(:path) && params[:file].respond_to?(:read)
        params[:file] = Faraday::UploadIO.new(params[:file], nil)
      end

      opts = {
        content_type: "multipart/form-data",
      }.merge(Util.normalize_opts(opts))
      super
    end
  end
end
```
assistant