public boolean isUnderMinimum() {
    return count.get() < minimum;
  }
Should be called after any connection destroys are done. Should not be called
after {@link #tryDestroy()}.

@param destroyCount number of connections being destroyed.

@return {@code true} if after decreasing count it is under the minimum, otherwise
        {@code false}.
geode-core/src/main/java/org/apache/geode/cache/client/internal/pooling/ConnectionAccounting.java