in src/main/java/org/apache/nifi/extension/definition/extraction/ExtensionClassLoaderFactory.java [266:281]
ExtensionClassLoader createClassLoader(final Set<Artifact> artifacts, final ExtensionClassLoader parent, final Artifact narArtifact) throws MojoExecutionException {
final Set<URL> urls = new HashSet<>();
for (final Artifact artifact : artifacts) {
final Set<URL> artifactUrls = toURLs(artifact);
urls.addAll(artifactUrls);
}
getLog().debug("Creating class loader with following dependencies: " + urls);
final URL[] urlArray = urls.toArray(new URL[0]);
if (parent == null) {
return new ExtensionClassLoader(urlArray, narArtifact, artifacts);
} else {
return new ExtensionClassLoader(urlArray, parent, narArtifact, artifacts);
}
}