WithAdditionalFields set the additional fields to query Some datastore has different way to handle non existent field, some return empty some return error.

WithLimit set the limit of the result.

WithSimilarity set the minimum similarity score Different datastore has different way to handle similarity score.

Option give way to pass additional parameter to the datastore.

DataStore is the interface for storing and retrieving data.

Retriever is the interface for retrieving data can be used to interact with read only data source like get API DataStore and VectorStore are interface compatible with retriever.

VectorStore is the interface for storing and retrieving vector data.