UpdateOpsImpl does not respect fieldName annotations for maps

[VPriesnitz]

Hello,
This is a critical bug.

When updating a field of type Map that has a fieldName annotation (@Embedded or @Property), then an update on that field does not replace the field's name with the provided value.

POJO
class Payload {
@id
private ObjectId id;

    @Property("c")
    private final Map<String, String> content = new HashMap<String, String>();
}

Update
ds.createUpdateOperations(Payload.class) .set("content.key", "newValue");

results in mongo:
{ "_id": { "$oid": "587609d12e934813a926ec69" }, "c": { "key": "value" }, "content": { "key": "newValue" } }
Note that the Document contains now both "c" and "content". The update returns without error and subsequent retrievals will ignore this update.

This behaviour was introduced in commit d0d9e04

Attached is patch that contains a unitTest to reproduce the issue. (had to rename from .patch to .TXT got github )
testUpdatingMapFieldsAnnotatedWithFieldNames.TXT