Add Docs about anything that is being added into Monog must have a converter

[StephenOTT]

Note that a Document.class does not actually require a _id. So when using a PUSH directly into a Array inside of a existing document, the Converter only requires that the Document format is used to is bypasses any Spring conversion utilities

such as

 @WritingConverter
    public class MongoWriterConverter implements Converter<TaxiiStatusFailureResource, Document> {
        public Document convert(final TaxiiStatusFailureResource object) {
            try {
                return Document.parse(TaxiiParsers.getMongoMapper().writeValueAsString(object));
            } catch (JsonProcessingException e) {
                throw new IllegalStateException(e);
            }
        }
    }

    @ReadingConverter
    public class MongoReaderConverter implements Converter<Document, TaxiiStatusFailureResource> {
        public TaxiiStatusFailureResource convert(final Document object) {
            try {
                return TaxiiParsers.getMongoMapper().readValue(object.toJson(), TaxiiStatusFailureResource.class);
            } catch (IOException e) {
                throw new IllegalStateException(e);
            }
        }
    }

[StephenOTT]

related https://jira.spring.io/browse/DATAMONGO-889