Drupal 11 compatibility for 3.0.x

I'll do my best to review that ASAP. Thank you very much!

We ran into a semi-related issue, when configuring field mapping for an existing external entity type.

$wrapper[method] is not a function

This is linked to the following change record https://www.drupal.org/node/3450770 → which in fact impacts D10.3

I'll update the MR to reflect this change.

Looks good. Tested on D10 and a clean D11. Works great, merging. Thanks!

Compatibility released in 3.0.0beta2.

Automatically closed - issue fixed for 2 weeks with no activity.