Why build_datastore with no arguments?

[futureal]

While tinkering around in vB3's code, I noticed many places that do something like (in pseudo-pseudocode):

$DB_site->query("UPDATE datastore SET ... ");
build_datastore();

Since the build_datastore function takes two arguments (title and data) and does nothing if the arguments aren't given...what's the point?

Were these calls added for stylistic reasons, or...? Perhaps future development?

I know this is an oddball question, just looking for an answer to satisfy my curiosity.