namespace Contacts
{
    [Introduced(PlatformName.WatchOS, 6, 0, PlatformArchitecture.All, null)]
    [Introduced(PlatformName.MacOSX, 10, 15, PlatformArchitecture.All, null)]
    [Introduced(PlatformName.iOS, 13, 0, PlatformArchitecture.All, null)]
    [Protocol(Name = "CNChangeHistoryEventVisitor", WrapperType = typeof(CNChangeHistoryEventVisitorWrapper))]
    [ProtocolMember(IsProperty = false, IsRequired = true, IsStatic = false, Name = "DropEverything", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryDropEverythingEvent) }, Selector = "visitDropEverythingEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = true, IsStatic = false, Name = "AddContact", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryAddContactEvent) }, Selector = "visitAddContactEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = true, IsStatic = false, Name = "UpdateContact", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryUpdateContactEvent) }, Selector = "visitUpdateContactEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = true, IsStatic = false, Name = "DeleteContact", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryDeleteContactEvent) }, Selector = "visitDeleteContactEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "AddGroup", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryAddGroupEvent) }, Selector = "visitAddGroupEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "UpdateGroup", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryUpdateGroupEvent) }, Selector = "visitUpdateGroupEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "DeleteGroup", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryDeleteGroupEvent) }, Selector = "visitDeleteGroupEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "AddMemberToGroup", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryAddMemberToGroupEvent) }, Selector = "visitAddMemberToGroupEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "RemoveMemberFromGroup", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryRemoveMemberFromGroupEvent) }, Selector = "visitRemoveMemberFromGroupEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "AddSubgroupToGroup", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryAddSubgroupToGroupEvent) }, Selector = "visitAddSubgroupToGroupEvent:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "RemoveSubgroupFromGroup", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(CNChangeHistoryRemoveSubgroupFromGroupEvent) }, Selector = "visitRemoveSubgroupFromGroupEvent:")]
    public interface ICNChangeHistoryEventVisitor : INativeObject, IDisposable
    {
        [BindingImpl(BindingImplOptions.GeneratedCode | BindingImplOptions.Optimizable)]
        [Export("visitUpdateContactEvent:")]
        [Preserve(Conditional = true)]
        void UpdateContact(CNChangeHistoryUpdateContactEvent! event);
    }
}