JDT provides a new cleanup which allows to transform code to call
methods directly on map instead of accessing the values or the keys
before calling a method. Examples are accessing the size or checking if
a element in contained in a collection.

Saves code which we have to read and might be slightly faster.

Change-Id: I9b3a7471f9f3ca43153aaa18461d48a9a310a737
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>