Is multipart/form-data supported?

I started doing some testing trying to make a request from Salesforce to a Mulesoft endpoint in  multipart/form-data. I'm wondering if there's a way to create the script in Salesforce for it,  I've created this script

%dw 2.0
input records application/java
output multipart/form-data
---
{
    parts: {
            text: {
                    content: "this is a content for text"
                }
        }
}

When calling the Apex script:

 public static void processMultipart(){
        DataWeave.Script script = new DataWeaveScriptResource.dataToMultipart();
        Map<Id,Attachment> mapAttachments = new Map<Id,Attachment>([Select Id, Body from Attachment limit 10]);
        DataWeave.Result result = script.execute(new Map<String, Object>{'records' => mapAttachments.values()});
        System.debug('DW Result: '+ result.getValue());
}

Salesforce reports:

Is there a sample for this, or maybe multipart/form-data is not supported yet?

Best!