This method is called when you "use" this class. You can pass an array of strings to the module via the
"use" function. These strings are assumed to be the names of schema objects that you want to load. This
can be useful if you are running under a mod_perl (or similar) environment and has the potential to save
some memory by preloading the objects before a fork, hopefully increasing shared memory.
This method explicitly ignores errors that may occur when trying to load a particular schema. This means
that later attempts to retrieve that schema will probably also fail. This is done so that the
application that wants a particular schema can explicitly handle the failure later on.