A class that is an inner class, but does not use its embedded
referenceto the object which created it.  This reference makes the
instancesof the class larger, and may keep the reference to the creator
objectalive longer than necessary.  If possible, the class should bemade
static.

Change-Id: I9b5b0ae7b280544a750c11422e480847e53ea941
Signed-off-by: Carsten Hammer <carsten.hammer@t-online.de>