private Connection borrow(int i) {
      try {
        return doBorrow(i);
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
    }
This tests that a deadlock between connection formation and connection pool closing has been
fixed. See GEODE-4615
geode-core/src/integrationTest/java/org/apache/geode/cache/client/internal/pooling/ConnectionManagerJUnitTest.java