public Builder setValidateAfterInactivity(final long validateAfterInactivity, final TimeUnit timeUnit) {
            this.validateAfterInactivity = TimeValue.of(validateAfterInactivity, timeUnit);
            return this;
        }
@return this instance.
@see #setValidateAfterInactivity(TimeValue)
httpclient5/src/main/java/org/apache/hc/client5/http/config/ConnectionConfig.java