@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result
				+ ((definition == null) ? 0 : definition.hashCode());
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		return result;
	}
Returns a unique name given to that stream definition.
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/core/BaseDefinition.java