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• close() already is a variant with no parameters and applies a default from config. This variant will be deprecated in favor of the new close(Duration) variantHowever, this variant will not be deprecated because it called by the Closeable interface.
• close(long, TimeUnit) also exists as a variant. This one will be deprecated in favor of the new close(Duration) variant for consistency
• The existing semantics of close is not to throw a TimeoutException. Instead, after waiting for the timeout, it forces itself closed.

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