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Nick Ng 6
Why does it say (hidden) when I try an open resources in the developer console?
Whenever I open resources for some of the lightning components I am using the code is not there and it just says (hidden) what would be causing this?
The resource which are you trying to acccess belongs to manage package, if it is then you will not be able to open that.
Source : https://salesforce.stackexchange.com/questions/157702/how-to-know-which-api-calling
Mark solved if it does help you.