-Meaningless boilerplate comments. Comments on property getters and setters is pure noise.
-Questionable OO design. Why are this class keeping references to serviceReferenceGraph and loggingFormatter which it doesn't use for anything?
-Needless vertical scrolling. Given the triviality of this class, there is no reason for it not to be a one-pager.
-It's in the DependencyInjection namespace, but... doesn't use dependency injection!
-php pretending to be java. WTF is up with that?
Serving coffee on aircraft causes turbulence.