ITMS-90338: Non-public API usage

The below-mentioned points I received in a mail from the App Store, when I tried to upload the build to the App Store.
Though I didn't found any such keywords when I searched in my code. Please help with this. Thank you.

ITMS-90338: Non-public API usage - The app references non-public symbols in ClikSource: kPOPLayerOpacity, kPOPLayerScaleXY. If method names in your source code match the private Apple APIs listed above, altering your method names will help prevent this app from being flagged in future submissions. In addition, note that one or more of the above APIs may be located in a static library that was included with your app. If so, they must be removed.



ITMS-90827: Invalid character in a UTI - The CFBundleDocumentTypes dictionary array in the 'com.cliksource.employer' contains a CFBundleTypeName whose LSItemContentTypes has an element that contains the character '/' or ':', which are not allowed.

how do we alter out "methods names"

ITMS-90338: Non-public API usage
 
 
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