Get Attachment Content

Returns the contents of an attachment. A `Range` header can be set to define a range of bytes within the attachment to download. See the [HTTP Range header standard](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Range) for details.To return a thumbnail of the attachment, use [Get attachment thumbnail](#api-rest-api-3-attachment-thumbnail-id-get).This operation can be accessed anonymously.**[Permissions](#permissions) required:** For the issue containing the...