public void postData(String payload) {
		Assert.hasText(payload, "payload must not be empty nor null");

		httpGenerator.postData(payload);

	}
Make a HTTP POST request using the provided string in the http body.

@param payload String to send in the http body.
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/SimpleHttpSource.java