openapi-processor samples
This project contains a number of sample projects of openapi-processor that show different configurations of openapi-processor. The samples don’t do anything useful.
A few of the examples have a pom with the maven plugin, most of the examples use gradle (a few have a groovy dsl build.grade, most have a kotlin dsl build.gradle.kts).
Look into the parent pom.xml in the root folder to find the samples which have a maven build configuration.
The name of the example project gives a hint which feature (configuration) and framework are showcased in the example. Most simply use java, the newer examples usually use kotlin.
Sample projects: https://github.com/openapi-processor/openapi-processor-samples .