this.witnessClient = null;
                        this.witnessEnabled = false;
                    } catch (Exception e) {
                        log.debug("Error closing witness client during emergency cleanup", e);
                    }
                }

                if (this.leaseManager != null) {
                    try {
                        this.leaseManager.shutdown();

                // StringWriter close() should not throw IOException, but log just in case
                if (logger.isDebugEnabled()) {
                    logger.debug("Unexpected IOException while closing StringWriter", e);
                }
            }
            return buf.toString();
        };
        final String message;

    edge-case regression introduced with the events cleanup in 3.14.0.

 *  Fix: Provide actionable advice when the exchange is non-null. Prior to 3.14, OkHttp would
    silently leak connections when an interceptor retries without closing the response body. With
    3.14 we detect this problem but the exception was not helpful.

## Version 3.14.0

_2019-03-14_

	// errors on a previous write(2) operation are reported only on the final close() that releases
	// the open file descriptor.
	//
	// Failing to check the return value when closing a file may lead to silent loss of data.
	// This can especially be observed with NFS and with disk quota.
	return w.Close()
}

        streamChatWithConcurrencyControl(request, callback);
    }

    // --- Prompt building methods ---

    /**
     * Wraps user input with delimiters, escaping any closing tags in the content.
     *
     * @param userMessage the user's message to wrap
     * @return the wrapped user input
     */
    protected String wrapUserInput(final String userMessage) {

                if (ssn.getExpiration() != null && ssn.getExpiration() < now && !ssn.isInUse()) {
                    if (log.isDebugEnabled()) {
                        log.debug("Closing session after timeout " + ssn);
                    }
                    ssn.logoff(false, false);
                }
            }
        }