Add the group, name and version to your application's build file, it will look similar based on your build tool:
group: "com.smileidentity", name: "smile-identity-core", version: ""and require the package:
import smile.identity.core.PartnerParameters;
import smile.identity.core.ImageParameters;
import smile.identity.core.IDParameters;
import smile.identity.core.Options;
import smile.identity.core.WebApi;
import smile.identity.core.IDApi;