public <S,T> void put(Class<S> sourceType, Class<T> targetType, DynamoDBTypeConverter<? extends S,? extends T> converter) {
            put(Key.of(sourceType, targetType), converter);
        }
Map of source and target pairs to the converter.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/datamodeling/DynamoDBTypeConverterFactory.java