I created a custom parser as seen in the attached screenshot below. It is not particularly useful, but it was a simple case to test.
When adding a new tool to the post-build task I do not see my custom parser in the list.
As far as I can tell from the documentation I have done the necessary steps.
found here: https://github.com/jenkinsci/warnings-ng-plugin/blob/master/doc/Documentation.md#creating-a-new-tool-in-the-user-interface
You need to select `Groovy Parser` as a tool and then the ID of your tool, see Documentation.md#using-the-defined-tool.
I feel pretty silly now. I thank you for the response.
no problem, maybe I should improve the documentation so that it will be better found.