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langchain/docs
mertkayhan 9b4974871d IMPROVEMENT Increase flexibility of ElasticVectorSearch (#6863)
Hey @rlancemartin, @eyurtsev ,

I did some minimal changes to the `ElasticVectorSearch` client so that
it plays better with existing ES indices.

Main changes are as follows:

1. You can pass the dense vector field name into `_default_script_query`
2. You can pass a custom script query implementation and the respective
parameters to `similarity_search_with_score`
3. You can pass functions for building page content and metadata for the
resulting `Document`

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