@CliAvailabilityIndicator({ LIST_CONTAINERS, LIST_MODULES })
	public boolean available() {
		return xdShell.getSpringXDOperations() != null;
	}
Commands to interact with cluster for containers/modules.

@author Ilayaperumal Gopinathan
spring-xd-shell/src/main/java/org/springframework/xd/shell/command/RuntimeCommands.java