presto-main/src/main/java/io/prestosql/server/PluginManagerConfig.java/PluginManagerConfig/setMavenLocalRepository
class PluginManagerConfig:    @Config("maven.repo.local")
    public PluginManagerConfig setMavenLocalRepository(String mavenLocalRepository)
    {
        this.mavenLocalRepository = mavenLocalRepository;
        return this;
    }