presto-atop/src/main/java/io/prestosql/plugin/atop/AtopMetadata.java/AtopMetadata/AtopMetadata
class AtopMetadata:    @Inject
    public AtopMetadata(TypeManager typeManager, Environment environment)
    {
        this.typeManager = requireNonNull(typeManager, "typeManager is null");
        this.environment = requireNonNull(environment, "environment is null").toString();
    }