Spring boot LDAP get memberOf in ODM

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ldap.core.LdapTemplate;
import org.springframework.stereotype.Service;

@Service
public class LDAPService {

    private final LdapTemplate ldapTemplate;

    @Autowired
    public LDAPService(LdapTemplate ldapTemplate) {
        this.ldapTemplate = ldapTemplate;
    }

    public List<String> getMemberOf(String username) {
        String query = "(sAMAccountName=" + username + ")";
        List<String> memberOf = ldapTemplate.search(
                "", query,
                (Attributes attributes) -> {
                    Attribute memberOfAttribute = attributes.get("memberOf");
                    List<String> groups = new ArrayList<>();
                    if (memberOfAttribute != null) {
                        for (int i = 0; i < memberOfAttribute.size(); i++) {
                            groups.add(memberOfAttribute.get(i).toString());
                        }
                    }
                    return groups;
                });
        return memberOf;
    }
}