passThroughFields property
When not empty, the specified fields in the *_read_instances source will be joined as-is in the output, in addition to those fields from the Featurestore Entity.
For BigQuery source, the type of the pass-through values will be automatically inferred. For CSV source, the pass-through values will be passed as opaque bytes.
Implementation
final List<BatchReadFeatureValuesRequest_PassThroughField> passThroughFields;