Bug description The function definition for function calls does not support generics.

Environment Spring ai 1.0.0-SNAPSHOT

Steps to reproduce step1: public class TrainSearchScheduleService implements Function<RequestBean<TrainSearchScheduleReq>, ResponseBean<TrainSearchScheduleResp>> { .... } step2: Runtime-based generic type erasure leads to the loss of generic information.

Expected behavior Support for defining generic classes

Comment From: mxsl-gr

generic type is not supported yet, because the FunctionCallback.inputTypeSchema is generated based on Class, not Type. In theory, it could be supported if the Class is replaced with Type.

Comment From: lvchzh

generic type is not supported yet, because the FunctionCallback.inputTypeSchema is generated based on Class, not Type. In theory, it could be supported if the Class is replaced with Type. Yes, I have noticed this through the code and submitted changes to address the issue. commit 71e8cee64ea7f2df7b703d8820eb40391b8cfdd2

Comment From: csterwa

@lvchzh is resolved with commit https://github.com/spring-projects/spring-ai/commit/71e8cee64ea7f2df7b703d8820eb40391b8cfdd2?

Comment From: markpollack

Hard to tell from the commit as it doesn't contain tests as specified in the example. That said, we have spent efforts to remove dependencies on type utils in spring cloud function and create our own type utils that also help with kotlin support. Will investigate the support of 

public class TrainSearchScheduleService implements Function<RequestBean<TrainSearchScheduleReq>, ResponseBean<TrainSearchScheduleResp>>

Comment From: tzolov

Resolved by 432954dad7f7c3a33117848a4259bc7076865c5f