Add 'check mode' feature to an existing module

[Tom Paine]

ec2_elb_lb does not support 'check mode' (Dry run).

I would like to add it to the module.

- Is the below still the preferred way?

https://groups.google.com/d/topic/ansible-project/v638okDSzvo/discussion

add supports_check_mode=True to the bottom of the AnsibleModule constructor 

AND 

wherever a module decides to set "changed" = True, and before actually 
making a change, do something like: 

if self.check_mode: 
    module.exit_json(changed=True) 

 

- Are there any templates or examples?