@class NSDictionary, _MXExtensionProvider, NSObject; @protocol OS_dispatch_queue; @interface _MXExtensionServiceCenter : NSObject { NSObject<OS_dispatch_queue> *_extlock; NSDictionary *_extensions; NSDictionary *_mapsExtensions; NSDictionary *_containingAppProxies; } @property (copy, nonatomic) NSDictionary *extensions; @property (copy, nonatomic) NSDictionary *mapsExtensions; @property (copy, nonatomic) NSDictionary *containingAppProxies; @property (readonly, weak, nonatomic) _MXExtensionProvider *extensionProvider; - (void)_clearExtensions; - (id)_siblingExtensionsWithContainingAppIdentifer:(id)a0; - (id)initWithExtensionProvider:(id)a0; - (void)receivedExtensions:(id)a0 error:(id)a1; - (void).cxx_destruct; - (id)_extensionWithIdentifier:(id)a0; - (id)allExtensions; @end