My current task had me looking at this class and I saw some places that could use a bit of cleanup and reorginization.

* Removed unused method parameters
* Reduce usage of configuration name string constants and needless querying of configurations when we already had references elsewhere in class
* Make some methods static where possible
* Consolidate some short and related methods
* Break up generic methods by moving code into relevant locations
* Comment and javadoc formatting
* Move test code into test suites block, use configuration names from test source set instead of static constants
* Separate `configureConfigurations` into two methods, each creating one of `apiElements` and `runtimeElements`