===== Clean code =====

== Strong cohersion - loos copling. Alias Law of Demeter. ==

Interfaces between objects should be defined clearly, and there should be as few as possible.
So that dependencies may be exchanged easily.


Alias  **Law of Demeter**

A method of an object may only call methods of:

  * The object itself.
  * An argument of the method.
  * Any object created within the method.
  * Any direct properties/fields of the object.

https://de.wikipedia.org/wiki/Gesetz_von_Demeter