presto-plugin-toolkit/src/main/java/io/prestosql/plugin/base/authentication/CachingKerberosAuthentication.java/CachingKerberosAuthentication/CachingKerberosAuthentication
class CachingKerberosAuthentication:    public CachingKerberosAuthentication(KerberosAuthentication kerberosAuthentication)
    {
        this.kerberosAuthentication = requireNonNull(kerberosAuthentication, "kerberosAuthentication is null");
    }