[Zope] Z Search Interface

[Andrew Whalley]

I am new to Zope and I am using version 2.13 from the Linux Mint 18 
repository. I am trying to following the Zope2 Book, Section 18, 
Searching and Categorizing Content which refers to adding a Z Search 
Interface object to a ZCatalog. However, the Z Search Interface does not 
appear as an option in the Add List. I was wondering whether this object 
has been deprecated, and if so, whether there is any documentation on 
its replacement.

Many thanks.