This module contains static services and default implementations for other core services.
In order to keep core dependencies as clean as possible,
we avoid accessing helpers like X_Inject or X_Reflect unless they are needed to perform a task.
For example, ReflectionService and it's default implementation don't have to know about X_Inject,
but it's public service X_Reflect does. So, the implementation goes in xapi-core-reflect,
and the static accessor goes in xapi-core-util.