in aws-mwaa-environment/src/main/java/software/amazon/mwaa/translator/TypeTranslator.java [185:193]
public static Map<String, Object> toStringToObjectMap(final Map<String, String> input) {
if (input == null) {
return null;
}
Map<String, Object> result = new HashMap<>();
input.forEach(result::put);
return result;
}