Field failCountsField = SmbTransportPoolImpl.class.getDeclaredField("failCounts");
        failCountsField.setAccessible(true);
        @SuppressWarnings("unchecked")
        Map<String, Integer> failCounts = (Map<String, Integer>) failCountsField.get(pool);

        // When: Add fail counts
        failCounts.put("192.168.1.1", 3);
        failCounts.put("192.168.1.2", 1);

        // Then: Should be accessible

                final String hostAddress = addr.getHostAddress();
                final Integer failCount = this.failCounts.get(hostAddress);
                if (failCount == null) {
                    this.failCounts.put(hostAddress, 1);
                } else {
                    this.failCounts.put(hostAddress, failCount + 1);
                }
                ex = e;
            }
        }