text: /*
   *  CTCallCenter.h
   *  CFTelephony
   *
   *  Copyright 2010 Apple, Inc. All rights reserved.
   *
   */
  
  #import <Foundation/Foundation.h>
  #import <CoreTelephony/CoreTelephonyDefines.h>
  
  @class CTCall;
  
  NS_ASSUME_NONNULL_BEGIN
  
  CORETELEPHONY_CLASS_DEPRECATED(4_0, 10_0, "Replaced by CXCallObserver from CallKit.framework")
  @interface CTCallCenter : NSObject
  
  /*
   * currentCalls
   *
   * Discussion:
   *   An array containing CTCall objects for all calls that are currently
   *   in progress. If no calls are active, this will be nil.
   *
   */
  @property(readonly, retain, nullable) NSSet<CTCall*> *currentCalls __OSX_AVAILABLE_BUT_DEPRECATED_MSG(__MAC_NA, __MAC_NA, __IPHONE_4_0, __IPHONE_10_0, "Replaced by <CallKit/CXCallObserver.h>");
  
  /*
   * callEventHandler
   *
   * Discussion:
   *   A block that will be dispatched on the default priority global dispatch
   *   queue when a new call event occurs. Set this property to a block
   *   that is defined in your application to handle call events.
   */
  @property(nonatomic, copy, nullable) void (^callEventHandler)(CTCall*) __OSX_AVAILABLE_BUT_DEPRECATED_MSG(__MAC_NA, __MAC_NA, __IPHONE_4_0, __IPHONE_10_0, "Replaced by <CallKit/CXCallObserver.h>");
  
  @end
  
  NS_ASSUME_NONNULL_END
  