InputLocation.merge(target.getLocation("modules"), source.getLocation("modules"), indices));
        }
    }

    /*
     * TODO: The order of the merged list could be controlled by an attribute in the model association: target-first,
     * source-first, dominant-first, recessive-first
     */
    @Override
    protected void mergeModelBase_Repositories(
            ModelBase.Builder builder,

    assertEquals("b", cache.getUnchecked("b"));
  }

  // "Basher tests", where we throw a bunch of stuff at a LoadingCache and check basic invariants.

  /**
   * This is a less carefully-controlled version of {@link #testRemovalNotification_clear} - this is
   * a black-box test that tries to create lots of different thread-interleavings, and asserts that