EDIT

package eu.etaxonomy.cdm.api.service;

import java.util.List;

import eu.etaxonomy.cdm.api.service.pager.Pager;

import eu.etaxonomy.cdm.model.description.IIdentificationKey;

import eu.etaxonomy.cdm.model.taxon.TaxonBase;

public interface IIdentificationKeyService {

	/**

	 * Returns a paged list of IIdentificationKey entities sorted by creation date, newest first

	 * 

	 * @param pageSize The maximum number of objects returned (can be null for all matching objects)

	 * @param pageNumber The offset (in pageSize chunks) from the start of the result set (0 - based, 

	 *                   can be null, equivalent of starting at the beginning of the recordset)

	 * @param propertyPaths properties to be initialized

	 * @return a pager of IdentificationKeys

	 */

	public Pager<IIdentificationKey> page(Integer pageSize, Integer pageNumber, List<String> propertyPaths);

	/**

	 * Finds IdentificationKeys which cover the Taxon given as parameter

	 * 

	 * @param taxon

	 *            The Taxon to search IdentificationKeys for

	 * @param type

	 *            may restrict the type to a specific implementation of

	 *            IIdentificationKey

	 * @param pageSize

	 *            The maximum number of objects returned (can be null for all

	 *            matching objects)

	 * @param pageNumber

	 *            The offset (in pageSize chunks) from the start of the result

	 *            set (0 - based, can be null, equivalent of starting at the

	 *            beginning of the recordset)

	 * @param propertyPaths

	 *            properties to be initialized

	 * @return a pager of IdentificationKeys

	 */

	public <T extends IIdentificationKey> Pager<T> findKeysConvering(

			TaxonBase taxon, Class<T> type, Integer pageSize,

			Integer pageNumber, List<String> propertyPaths);

}