presto-main/src/main/java/io/prestosql/server/PluginManager.java/PluginManager/buildClassLoaderFromCoordinates
class PluginManager:    private PluginClassLoader buildClassLoaderFromCoordinates(String coordinates)
            throws Exception
    {
        Artifact rootArtifact = new DefaultArtifact(coordinates);
        List<Artifact> artifacts = resolver.resolveArtifacts(rootArtifact);
        return createClassLoader(artifacts, rootArtifact.toString());
    }