### Question:
ResourceModelStatistics { public ResourceModelStatistics countCacheHit() { ++this.cacheHits; return this; } ResourceModelStatistics(); ResourceModelStatistics countInstantiation(); ResourceModelStatistics countSubsequentMapping(); ResourceModelStatistics countCacheHit(); ResourceModelStatistics countMappingDuration(int durationInMs);  }### Answer:
@Test public void testCacheHitCount() { assertNumberOfCacheHitsIs(0); countCacheHit(); assertNumberOfCacheHitsIs(1); countCacheHit(); assertNumberOfCacheHitsIs(2); }