If you look carefully at the parse method, you see that the class first reads the text file for the initial values, then reads the database to update the keys to their latest values.

The first argument to this method is a Map whose keys are fully qualified class names and whose corresponding values are CharSequences containing the source for that class. For example.

Functions are “first-class” citizens in FP, meaning they can be assigned to variables, passed to other functions, etc., just like other values.