public virtual void TestGetAttachment()
{
server.setResponseBody("../../../TestSDK/resources/getAttachment.json");
Attachment attachment = sheetAttachmentResource.GetAttachment(56545654, 56464654);
Assert.IsTrue(attachment.AttachmentType == AttachmentType.FILE);
Assert.IsTrue(attachment.MimeType == "image/png");
Assert.IsTrue(attachment.Id == 4583173393803140);
Assert.IsTrue(attachment.Description == null);
Assert.IsTrue(attachment.Name == "at3.png");
Assert.IsTrue(attachment.Url == "URL_TO_ATTACHMENT");
Assert.IsTrue(attachment.UrlExpiresInMillis == 120000);
}