chore: update code format

src/Forms/Prism.Forms.Regions/Ioc/RegionRegistrationExtensions.cs

-using System;
+using System;
 using Prism.Navigation.Regions;
 using Prism.Navigation.Regions.Adapters;
 using Prism.Navigation.Regions.Behaviors;
 using Prism.Navigation.Regions.Navigation;
-using Prism.Navigation.Regions;
 using Xamarin.Forms;
 
 namespace Prism.Ioc

src/Maui/Prism.Maui/Common/MvvmHelpers.cs

 using System.ComponentModel;
 using System.Reflection;
 using Prism.Navigation;
-using Prism.Navigation.Xaml;
 using Prism.Navigation.Regions;
+using Prism.Navigation.Xaml;
 using NavigationMode = Prism.Navigation.NavigationMode;
 using TabbedPage = Microsoft.Maui.Controls.TabbedPage;
 
@@ -22,10 +22,10 @@ public static class MvvmHelpers
             action(viewModelAsT);
         }
 
-        if(view is Page page)
+        if (view is Page page)
         {
             var children = page.GetChildRegions();
-            if(children is not null)
+            if (children is not null)
                 foreach (var child in children)
                     InvokeViewAndViewModelAction<T>(child, action);
         }
@@ -46,7 +46,7 @@ public static class MvvmHelpers
         if (view is Page page)
         {
             var children = page.GetChildRegions();
-            if(children is not null)
+            if (children is not null)
                 foreach (var child in children)
                     await InvokeViewAndViewModelActionAsync<T>(child, action);
         }
@@ -60,7 +60,7 @@ public static class MvvmHelpers
 
             InvokeViewAndViewModelAction<IDestructible>(view, v => v.Destroy());
 
-            if(view is Page page)
+            if (view is Page page)
             {
                 page.Behaviors?.Clear();
                 page.BindingContext = null;
@@ -301,7 +301,7 @@ public static class MvvmHelpers
     {
         var navigationService = Navigation.Xaml.Navigation.GetNavigationService(navigationPage.CurrentPage);
         var result = await navigationService.GoBackAsync();
-        if(result.Exception is NavigationException navEx && navEx.Message == NavigationException.CannotPopApplicationMainPage)
+        if (result.Exception is NavigationException navEx && navEx.Message == NavigationException.CannotPopApplicationMainPage)
         {
             Application.Current.Quit();
         }

src/Maui/Prism.Maui/Common/ObservableObject.cs

@@ -24,4 +24,4 @@ public class ObservableObject<T> : BindableObject, INotifyPropertyChanged
         get => (T)GetValue(ValueProperty);
         set => SetValue(ValueProperty, value);
     }
-}
\ No newline at end of file
+}

src/Maui/Prism.Maui/Ioc/RegionNavigationRegistrationExtensions.cs

-using Microsoft.Maui.Controls.Compatibility;
+using Microsoft.Maui.Controls.Compatibility;
 using Prism.Mvvm;
 using Prism.Navigation.Regions;
 using Prism.Navigation.Regions.Adapters;
 using Prism.Navigation.Regions.Behaviors;
 using Prism.Navigation.Regions.Navigation;
-using Prism.Navigation.Regions;
 
 namespace Prism.Ioc;
 

src/Maui/Prism.Maui/Navigation/Xaml/GoBackExtension.cs

@@ -29,4 +29,4 @@ public class GoBackExtension : NavigationExtensionBase
             Log(result.Exception, parameters);
         }
     }
-}
\ No newline at end of file
+}

src/Prism.Core/Navigation/Regions/INavigateAsync.cs

 using System;
-using Prism.Navigation;
 
 namespace Prism.Navigation.Regions
 {

src/Prism.Core/Navigation/Regions/IRegionBehavior.cs

@@ -14,6 +14,5 @@ namespace Prism.Navigation.Regions
         /// Attaches the behavior to the specified region.
         /// </summary>
         void Attach();
-
     }
 }

src/Prism.Core/Navigation/Regions/IRegionCollection.cs

@@ -37,10 +37,10 @@ namespace Prism.Navigation.Regions
         bool ContainsRegionWithName(string regionName);
 
         /// <summary>
-        /// Adds a region to the <see cref="RegionManager"/> with the name received as argument.
+        /// Adds a region to the <see cref="IRegionManager"/> with the name received as argument.
         /// </summary>
         /// <param name="regionName">The name to be given to the region.</param>
-        /// <param name="region">The region to be added to the <see cref="RegionManager"/>.</param>
+        /// <param name="region">The region to be added to the <see cref="IRegionManager"/>.</param>
         /// <exception cref="ArgumentNullException">Thrown if <paramref name="region"/> is <see langword="null"/>.</exception>
         /// <exception cref="ArgumentException">Thrown if <paramref name="regionName"/> and <paramref name="region"/>'s name do not match and the <paramref name="region"/> <see cref="IRegion.Name"/> is not <see langword="null"/>.</exception>
         void Add(string regionName, IRegion region);

src/Prism.Core/Navigation/Regions/UpdateRegionsException.cs

@@ -38,10 +38,10 @@ namespace Prism.Navigation.Regions
         }
 
         /// <summary>
-         /// Initializes a new instance of the <see cref="UpdateRegionsException"/> class with serialized data.
-         /// </summary>
-         /// <param name="info">The <see cref="SerializationInfo"/> that holds the serialized object data about the exception being thrown.</param>
-         /// <param name="context">The <see cref="StreamingContext"/> that contains contextual information about the source or destination.</param>
+        /// Initializes a new instance of the <see cref="UpdateRegionsException"/> class with serialized data.
+        /// </summary>
+        /// <param name="info">The <see cref="SerializationInfo"/> that holds the serialized object data about the exception being thrown.</param>
+        /// <param name="context">The <see cref="StreamingContext"/> that contains contextual information about the source or destination.</param>
         protected UpdateRegionsException(SerializationInfo info, StreamingContext context)
             : base(info, context)
         {

tests/Forms/Prism.Forms.Regions.Tests/Tests/LocatorNavigationTargetHandlerFixture.cs

-using System;
+using System;
 using System.Collections.Generic;
 using System.Text;
 using Moq;
@@ -6,7 +6,6 @@ using Prism.Ioc;
 using Prism.Ioc.Internals;
 using Prism.Navigation.Regions;
 using Prism.Navigation.Regions.Navigation;
-using Prism.Navigation.Regions;
 using Xamarin.Forms;
 using Xunit;
 using Region = Prism.Navigation.Regions.Region;

tests/Forms/Prism.Forms.Regions.Tests/Tests/RegionAdapterBaseFixture.cs

@@ -2,8 +2,8 @@
 using System.Collections.Generic;
 using System.Text;
 using Prism.Forms.Regions.Mocks;
-using Prism.Navigation.Regions.Adapters;
 using Prism.Navigation.Regions;
+using Prism.Navigation.Regions.Adapters;
 using Xamarin.Forms;
 using Xunit;
 

tests/Forms/Prism.Forms.Regions.Tests/Tests/RegionNavigationServiceFixture.cs

@@ -2,15 +2,15 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using Moq;
+using NuGet.Frameworks;
 using Prism.Ioc;
 using Prism.Navigation;
-using Prism.Navigation.Regions.Navigation;
 using Prism.Navigation.Regions;
 using Prism.Navigation.Regions.Navigation;
+using Prism.Navigation.Regions.Navigation;
 using Xamarin.Forms;
 using Xunit;
 using Region = Prism.Navigation.Regions.Region;
-using NuGet.Frameworks;
 
 namespace Prism.Forms.Regions.Tests
 {

tests/Forms/Prism.Forms.Regions.Tests/Tests/ViewsCollectionFixture.cs

@@ -117,7 +117,7 @@ namespace Prism.Forms.Regions.Tests
             originalCollection.Remove(filteredInObject);
 
             Assert.NotNull(oldItemsPassed);
-            Assert.Equal(1, oldItemsPassed.Count);
+            Assert.Single(oldItemsPassed);
             Assert.Same(filteredInObject.Item, oldItemsPassed[0]);
         }
 
@@ -133,7 +133,7 @@ namespace Prism.Forms.Regions.Tests
             originalCollection.Add(filteredInObject);
 
             Assert.NotNull(newItemsPassed);
-            Assert.Equal(1, newItemsPassed.Count);
+            Assert.Single(newItemsPassed);
             Assert.Same(filteredInObject.Item, newItemsPassed[0]);
         }
 

tests/Maui/Prism.DryIoc.Maui.Tests/Fixtures/Regions/RegionFixture.cs

@@ -112,7 +112,7 @@ public class RegionFixture : TestBase
     [Fact]
     public void RegionManager_HasTwoRegions()
     {
-        var mauiApp = CreateBuilder(prism => 
+        var mauiApp = CreateBuilder(prism =>
                 prism.RegisterTypes(container =>
                 {
                     container.RegisterForNavigation<MockContentRegionPage, MockContentRegionPageViewModel>();

tests/Wpf/Prism.Wpf.Tests/Regions/ViewsCollectionFixture.cs

@@ -117,7 +117,7 @@ namespace Prism.Wpf.Tests.Regions
             originalCollection.Remove(filteredInObject);
 
             Assert.NotNull(oldItemsPassed);
-            Assert.Equal(1, oldItemsPassed.Count);
+            Assert.Single(oldItemsPassed);
             Assert.Same(filteredInObject.Item, oldItemsPassed[0]);
         }
 
@@ -133,7 +133,7 @@ namespace Prism.Wpf.Tests.Regions
             originalCollection.Add(filteredInObject);
 
             Assert.NotNull(newItemsPassed);
-            Assert.Equal(1, newItemsPassed.Count);
+            Assert.Single(newItemsPassed);
             Assert.Same(filteredInObject.Item, newItemsPassed[0]);
         }