How to use a multi-fidelity search algorithm?

Ray.tune’s dragon-fly algorithm seems not support the multi-fidelity algorithm, which is implemented as BOCA in dragon-fly. Is there a way to use a multi-fidelity algorithm?

We are planning to add multi-fidelity support to Optuna Searcher. Just enhanced the FR to include Dragonfly as well. Please refer to [tune] Multi-Objective Samplers Like NSGA-II found in Optuna · Issue #18027 · ray-project/ray · GitHub.