This method should be defined in the class which consumes this role.
Given a pool object, return the next replicant that will serve queries. The
-default behavior is to grap the first replicant it finds but you can write
+default behavior is to grab the first replicant it finds but you can write
your own subclasses of L<DBIx::Class::Storage::DBI::Replicated::Balancer> to
support other balance systems.