this.endDate = this.startDate.clone();

            if (this.maxDate && this.endDate.isAfter(this.maxDate))
                this.endDate = this.maxDate.clone();

            if (this.maxSpan && this.startDate.clone().add(this.maxSpan).isBefore(this.endDate))
                this.endDate = this.startDate.clone().add(this.maxSpan);

            this.previousRightTime = this.endDate.clone();

        clone.setResolved(artifact.isResolved());
        clone.setFile(artifact.getFile());

        clone.setAvailableVersions(copyList(artifact.getAvailableVersions()));
        if (artifact.getVersion() != null) {
            clone.setBaseVersion(artifact.getBaseVersion());
        }
        clone.setDependencyFilter(artifact.getDependencyFilter());

		}
	}

	return targetIDs
}

// Clone - returns copy of this rules.
func (rules Rules) Clone() Rules {
	rulesCopy := make(Rules)

	for pattern, targetIDSet := range rules {
		rulesCopy[pattern] = targetIDSet.Clone()
	}

	return rulesCopy
}

// Union - returns union with given rules as new rules.
func (rules Rules) Union(rules2 Rules) Rules {
	nrules := rules.Clone()

	for pattern, targetIDSet := range rules2 {

    /**
     * Method clone.
     *
     * @return InputSource
     */
    public InputSource clone() {
        try {
            InputSource copy = (InputSource) super.clone();

            return copy;
        } catch (Exception ex) {
            throw (RuntimeException)
                    new UnsupportedOperationException(getClass().getName() + " does not support clone()").initCause(ex);
        }

	if sqldb, ok := connPool.(*sql.DB); ok && sqldb != nil {
		return sqldb, nil
	}

	return nil, ErrInvalidDB
}

func (db *DB) getInstance() *DB {
	if db.clone > 0 {
		tx := &DB{Config: db.Config, Error: db.Error}

		if db.clone == 1 {
			// clone with new statement
			tx.Statement = &Statement{
				DB:        tx,
				ConnPool:  db.Statement.ConnPool,
				Context:   db.Statement.Context,

        List<ComponentDescriptor<?>> clones = null;
        if (mojos != null) {
            clones = new ArrayList<>(mojos.size());
            for (MojoDescriptor mojo : mojos) {
                MojoDescriptor clone = mojo.clone();
                clone.setPluginDescriptor(pluginDescriptor);
                clones.add(clone);
            }
        }
        return clones;
    }

// Err implements error so we can use it anywhere
type Err struct {
	msg    string
	detail string
	action string
	hint   string
}

// Clone returns a new Err struct with the same information
func (u Err) Clone() Err {
	return Err{
		msg:    u.msg,
		detail: u.detail,
		action: u.action,
		hint:   u.hint,
	}
}

// Error returns the error message
func (u Err) Error() string {

		return
	}

	var cfgList []madmin.IDPListItem
	var err error
	switch idpCfgType {
	case madmin.OpenidIDPCfg:
		cfg := globalServerConfig.Clone()
		cfgList, err = globalIAMSys.OpenIDConfig.GetConfigList(cfg)
	case madmin.LDAPIDPCfg:
		cfg := globalServerConfig.Clone()
		cfgList, err = globalIAMSys.LDAPConfig.GetConfigList(cfg)

	default:
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)

	return hashPath(d.Info.Name)
}

// clone returns a copy of the cache with no references to the existing.
func (d *dataUsageCache) clone() dataUsageCache {
	clone := dataUsageCache{
		Info:  d.Info,
		Cache: make(map[string]dataUsageEntry, len(d.Cache)),
	}
	for k, v := range d.Cache {
		clone.Cache[k] = v.clone()
	}
	return clone
}

// merge root of other into d.

public interface ModelInterpolator {

    /**
     * Interpolates expressions in the specified model. Note that implementations are free to either interpolate the
     * provided model directly or to create a clone of the model and interpolate the clone. Callers should always use
     * the returned model and must not rely on the input model being updated.
     *
     * @param model The model to interpolate, must not be {@code null}.