BLE HID Host save paired profiles for reconnection

[Avijit08]

Hi,
I am using the esp_hid_host example. It is working on bluedroid. I am using the esp32 to connect to a ble keyboard. I want to save different keyboards and have automatic-reconnection-once-paired functionality as well. I know we need to use ltk, csrk, irk etc but I don't seem to understand where the APIs are called and what should be the overall procedure to follow. Any guidance would be welcome.