Creating barcodes caches the image independently of the type

[ahus1]

Given the following code:

qrcode::123[]

code39::123[]

and the following command:

asciidoctor -r asciidoctor-diagram test.adoc

it creates the output with identical images as shown below, while two different types of barcodes are expected.

Possible cause: The type of the barcode is not part of the calculated hash.

Workaround: add an attribute like target=... with different values.