"This library provides UI components, such as XAML extensions, helpers, converters and more. It is part of the Windows Community Toolkit.      AdvancedCollectionView: It's a collection view implementation that support filtering, sorting and incremental loading. It's meant to be used in a viewmodel.            Behaviors:      - BehaviorBase: Helper for building Behaviors      - ViewportBehavior: Listening for element to enter or exit the ScrollViewer viewport      CacheBase: Provides methods and tools to cache files in a folder.            Converters: Commonly used converters that allow the data to be modified as it passes through the binding engine.            Extensions:      - ApplicationViewExtensions: Provides attached properties for interacting with the ApplicationView on a window (app view).      - FrameworkElementExtensions: Provides attached dependency properties for the FrameworkElement.      - ListViewExtensions: Provides attached dependency properties for the ListViewBase      - LogicalTree: Defines a collection of extensions methods for UI.      - MatrixExtensions: Provides a set of extensions to the Matrix struct.      - MatrixHelperEx: Static helper methods for Matrix.      - Mouse: Helper class for easily changing the mouseover cursor type.      - NullableBool: Custom MarkupExtension which can provide nullable bool values.      - RotateTransformExtensions: Extension methods for RotateTransform.      - ScaleTransformExtensions: Extension methods for ScaleTransform.      - ScrollViewerExtensions: Provides attached dependency properties for the ListViewBase      - SkewTransformExtensions: Extension methods for SkewTransform.      - SurfaceDialTextbox: Helper class that provides attached properties to enable any TextBox with the Surface Dial.      - TextBoxMask: TextBox mask property allows a user to more easily enter fixed width text in TextBox control.      - TextBoxRegex: TextBoxRegex allows text validation using a regular expression.      - TitleBarExtensions: Provides attached dependency properties for interacting with the ApplicationViewTitleBar on a window (app view).      - TranslateTransformExtensions: Extension methods for TranslateTransform.      - VisualExtensions: Extension methods and attached properties for Visual objects      - VisualTree: Defines a collection of extensions methods for UI.      Helpers:      - BindableValueHolder: Holds the value. Can be used to change several objects' properties at a time.      - DependencyPropertyWatcher: Used to Track Changes of a Dependency Property      - ThemeListener: Class which listens for changes to Application Theme or High Contrast Modes and Signals an Event when they occur."