This POM is the common parent of all of the Maven plugins in the Apache Maven project.
This POM provides run-its profile for running Integration Tests to check real plugin execution. A default configuration for maven-invoker-plugin is defined, that every plugin needs to enhance to match its prerequisite. Then ITs are launched in every plugin with following command:
mvn -Prun-its verify
As of version 22, this POM sets the Java source and target versions to 1.5. Thus any plugin moved to version 22+ of this POM moves to requiring Java 1.5.