You can create new API files at any time.
NOTE: If you create a new API file to provide a new API method, you must name the API file the same as the class. Ensure you use the correct case.
To create an API file
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In the menu bar, click View > Navigation. 
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In the navigation, click API files. 
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Click Add > Add API file. 
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In the new window, create the file definition. 
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On the toolbar, click (Save). 
