Drag & Drop Case Attachments – Get Existing Attachments function

function getExistingAttachments() {
    webapi.safeAjax({
        type: "GET",
        url: "/_api/annotations?$select=annotationid,filename,mimetype&$filter=(_objectid_value eq {{ request.params.id }} and isdocument eq true)&$orderby=createdon desc",
        contentType: "application/json",
        success: function (data, textStatus, xhr) {
            var results = data;
            console.log(results);
            for (var i = 0; i < results.value.length; i++) {
                var result = results.value[i];
                // Columns
                var annotationid = result["annotationid"]; // Guid
                var filename = result["filename"]; // Text
                var mimetype = result["mimetype"]; // Text
                // Run the generateThumbnail function, passing the note GUID, file name and mimetype as inputs
                generateThumbnail(annotationid,filename,mimetype);
            }
        },
        error: function (xhr, textStatus, errorThrown) {
            console.log(xhr);
        }
    });
}