Airbyte UI builder: OAuth token expiry date value issue

[nimeshvaghasiya]

I'm using airbyte oss version. setting up oauth for amazon seller partner api using airbyte ui builder.

sp api returns access_token, refresh_token, token_type, expires_in (as a seconds = 3600). airbyte ui builder allow user to enter: Token Expiry Property Name: use default name as expires_in

Unfortunately, sp api don't return expiry date time value instead it returns 3600 seconds to expires_in property value.
is it possible to intercept the value of expires_in seconds to now+seconds datetime value?