List of all subsystem(include Model reference) in each layer from model

Dear bros,

I want to ask how to list List of all subsystem(include Model reference) in each layer from model.

Expected result is struct or cell or any type for easy to get.

Model
    - Subystem_1
  	- sub Subystem_1
 	      - Block_1
	      - Block_2
              - Block_3
              . . .
	- sub Subystem_2
	- sub Subystem_3
	. . .
    - Subystem_2
 	- sub Subystem_1
	- sub Subystem_2
	- sub Subystem_3
	. . .
     - Subystem_3
     . . .

Could anyone help me?

Thank you so much

Answer 1

[maiaL]

This could be a starting point:

SubsystemsList=find_system('mdlName','SearchDepth',20,'LookUnderMasks','on','FollowLinks','on','LookInsideSubsystemReference','on','BlockType','Subsystem');