Adds a blocking entry with the specified phone number.
- iOS 10.0+
- UIKit for Mac 13.0+Beta
The phone number to be blocked.
When a phone number is blocked, the system telephony provider will disallow incoming calls from that phone number without displaying them to the user.
Call this method on the instance of
CXCallDirectoryExtensionContext passed as an argument to the block parameter of the
CXCallDirectoryProvider instance method
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