The undertow-parent pom's dependencyManagement does not have entries for the 2 -jakartaee9 artifacts.

This results in things like the following when doing builds involving these:

[WARNING] The POM for io.undertow:undertow-websockets-jsr-jakartaee9:jar:2.2.10.Final is invalid, transitive dependencies (if any) will not be available: 2 problems were encountered while building the effective model for io.undertow:undertow-websockets-jsr-jakartaee9:2.2.10.Final
[ERROR] 'dependencies.dependency.version' for io.undertow:undertow-servlet-jakartaee9:jar is missing. @
[ERROR] 'dependencies.dependency.version' for io.undertow:undertow-servlet-jakartaee9:test-jar is missing. @