I have a

build.gradle.kts

script that contains (among other things):

plugins {
  // <https://github.com/nilsmagnus/wsdl2java>
  id("no.nils.wsdl2java") version "0.10"
}

wsdl2java {
  ...
}

It's failing with "Unresolved reference: wsdl2java". What am I doing wrong?