Metacat

	/**

	 * Return a checksum of the object given the object identifier and the name

	 * of the checksum algorithm (the default being SHA-1)

	 * 

	 * @param session - the Session object containing the credentials for the Subject

	 * @param pid - the object identifier for the given object

	 * @param algorithm - the name of the checksum algorithm to be used

	 * @return

	 * @throws InvalidToken

	 * @throws ServiceFailure

	 * @throws NotAuthorized

	 * @throws NotFound

	 * @throws InvalidRequest

	 * @throws NotImplemented

	 */

	/* TODO: CNRead and MNRead have different getChecksum() signatures. Reconcile this first.

	public Checksum getChecksum(Session session, Identifier pid, String algorithm)

    throws InvalidToken, ServiceFailure, NotAuthorized, NotFound,

    InvalidRequest, NotImplemented {

		return null;

  }

  */