Comparing Node.js modules to an idiom in writing Java classes

On waking up this morning an idea was in my mind of a way to explain Node.js module structure & use by way of an idiom in writing Java classes.  Okay, I see that most JavaScript programmers go "ugh" whenever they think of Java, but it's a language I spent over 10 years living with as a Sun employee in the Java SE team, and it's an eminently useful language for certain realms of work.  And in any case this particular Java class idiom will make an aspect or two of Node.js modules a little more obvious than they are.

Adding Custom Breadcrumb for Drupal nodes

Shows how to add custom breadcrumbs in Drupal