fixed when tagDef contain more than one tag

[alexbleon]

problem was described https://groups.google.com/g/killbilling-users/c/Tu5p9c2q9Zg/m/TxRVktFkCwAJ
When I try delete several account tags meet with error.
After this fix trouble was gone

[pierre]

This should be fixed in the templates instead.

[alexbleon]

This should be fixed in the templates instead.

could you please explain what do you mean

[pierre]

Most of the code is auto-generated (see https://github.com/killbill/killbill-client-php/blob/master/README.md#api-generation). These changes would be overridden next time we re-generate the client, unless the template files reflect this fix. I also suspect other endpoints are affected.