Lalit Pagaria 9521e180b3
Standardize behavior of DocumentStores to return embeddings (#514)
* Adding support to return embedding along with other result via query_by_embedding function

* Adding test case to check return embedding

* By default for all tests but DPR tests: disable return_embedding flag

* Reducing None test case and fixing query_by_embedding of ElasticsearchDocumentStore when it updating self.excluded_meta_data directly

* Fixing mypy reported issue
2020-10-27 08:33:39 +01:00
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