ZF-8123: Typo in Chapter 2. Zend_Acl, 2.1.1. Resources
Chapter 2. Zend_Acl 2.1.1. Resources
The second sentence is missing some content, located where the asterisk is below.
A class need only implement this interface, which consists of a single method, getResourceId(), * so Zend_Acl to recognize the object as a resource.