Namespacing
How to Use PHP Namespaces
http://www.sitepoint.com/php-53-namespaces-basics/
Fully-qualified name
AppLib1MYCONST()
Qualified name
Lib1MyFunction()
Unqualified name
MyFunction()
Drupal Namespaces
https://www.drupal.org/node/1353118
If the namespace differs from the namespace of the current file, put a use statement on the top of the file.
Do not useglobal classes.
Drupal OOP
https://www.drupal.org/docs/develop/coding-standards/object-oriented-co…