OptionallocationDefaults to process.env.GOOGLE_CLOUD_LOCATION.
OptionalprojectDefaults to process.env.GOOGLE_CLOUD_PROJECT.
projects/{project}/locations/{location}/ragCorpora/{ragCorpusId}, or a
bare {ragCorpusId} when the project and the location are resolvable.
OptionalsimilarityNumber of contexts to retrieve. Sent as ragRetrievalConfig.topK.
OptionalvectorOnly return contexts below this vector distance. Defaults to 10.
Options for VertexAiRagMemoryService.