title: Call Functions in CakePHP 3
body: <p>Using CakePHP3, I have a dynamic set of customer supplied math functions in the file Operations.php (no class since it's a generic customer supplied for many php aps) and have it saved at src/Utils/.  At the heading of my controller under the line "use App/Controller/AppController;" I have the line "use App/Utils/Operations;".  When I try to call a function it errors with undefined function.  How do I call these functions from a controller?</p>