//! Retrieval tools — provide RAG (Retrieval-Augmented Generation) capabilities.
//!
//! Mirrors ADK-Python's `tools/retrieval` module. Provides base traits
//! and implementations for retrieving relevant documents to augment
//! LLM context.
pub use ;
pub use FilesRetrievalTool;
pub use VertexAiRagRetrievalTool;