GroundingMetadata
constructor(imageSearchQueries: List<String> = emptyList(), groundingChunks: List<GroundingChunk>? = null, groundingSupports: List<GroundingSupport>? = null, webSearchQueries: List<String>? = null, searchEntryPoint: SearchEntryPoint? = null, retrievalMetadata: RetrievalMetadata? = null)