code/game/objects/item_mob_overlay.dm 
| /proc/get_states_in_icon_cached | A proc for getting an associative list of icon states in an icon. Uses the same cache as check_state_in_icon. Does not copy, MUST NOT BE MUTATED. |
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| /proc/get_states_in_icon | get_states_in_icon_cached but it does a copy, so the return value can be mutated. |