public void setShutdownGracePeriod(final Duration shutdownGracePeriod) {
        this.shutdownGracePeriod = shutdownGracePeriod;
    }
Sets the time to wait for the channel to gracefully shutdown (completing all requests). If set to a negative
value, the channel waits forever. If set to {@code 0} the channel will force shutdown immediately. Defaults to
{@code 30s}.

@param shutdownGracePeriod The time to wait for a graceful shutdown.
grpc-client-spring-boot-starter/src/main/java/net/devh/boot/grpc/client/config/GrpcChannelProperties.java