Factory method for getting a search engine indexer for a given document type.
The type or name of the document set for which an indexer
should be retrieved. This corresponds to the type property on the
document collator/decorator factories and will most often be used to
identify an index or group to which documents should be written.
Perform a search query against the SearchEngine.
Optionaloptions: QueryRequestOptionsOverride the default translator provided by the SearchEngine.
Interface that must be implemented by specific search engines, responsible for performing indexing and querying and translating abstract queries into concrete, search engine-specific queries.