Attachment
public Attachment Attachment( @Json(name = "id") String id, @Json(name = "grant_id") String grantId, @Json(name = "size") Integer size, @Json(name = "filename") String filename, @Json(name = "content_type") String contentType, @Json(name = "is_inline") Boolean isInline, @Json(name = "content_id") String contentId, @Json(name = "content_disposition") String contentDisposition)