presto-main/src/main/java/io/prestosql/operator/annotations/FunctionsParserHelper.java/FunctionsParserHelper/isPrestoAnnotation
class FunctionsParserHelper:    public static boolean isPrestoAnnotation(Annotation annotation)
    {
        return isImplementationDependencyAnnotation(annotation) ||
                annotation instanceof SqlType ||
                annotation instanceof SqlNullable ||
                annotation instanceof IsNull;
    }