Relationship API: civicrm_relationship_create not creating associated memberships

The API function, civicrm_relationship_create() is not creating the corresponding memberships, if, for example, the new relationship defines the contact as an employee of an organization that has an existing membership (of the type that should grant employees a membership).

I also posted a forum topic on this: http://forum.civicrm.org/index.php?topic=4973