public int getCount() {
		return parseCount(get(COUNT_KEY));
	}
Return the number of container instances this module should be deployed to. A value of 0 indicates that this
module should be deployed to all containers that match the provided target expression. If no target expression
were provided and the count value is 0, this module should be deployed to all containers.

@return number of container instances
spring-xd-module/src/main/java/org/springframework/xd/module/ModuleDeploymentProperties.java