public GemFireServerSink host(String host) {
		Assert.hasLength(host, "'host' must not be empty or null");
		this.host = host;
		return this;
	}
Set the host name

@param host the host. Default is localhost
@return this
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/GemFireServerSink.java