code: public static Class<? extends MockProvider> lookupMockProviderClass(final String mockProviderClassName) {
  
          try {
              if (mockProviderClassName != null) {
                  return ReflectionUtil.lookupClass(MockProvider.class, mockProviderClassName);
              }
          } catch (final Exception e) {
              throw new RuntimeException("could not load mock provider class: '" + mockProviderClassName + "'", e);
          }
  
          throw new RuntimeException("no mock provider configured");
      }
docs: TODO extract