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 # Class PropertyBush

 Last update: 16.07.2025 

Namespace: [VM.Managed.DAFUL.Force](VM.Managed.DAFUL.Force.md)  
Assembly: VMDFB.dll

This class is to represent the bush force properties.

```csharp
public class PropertyBush : PropertyForce, IObservableObject, IDisposableObject, ILinkable, IObjectBase, IObject, IEventProvider, IHasKeyObject, ILinkContainerEvent, IVerifiable, IHistoryObjectSerializable, IAttributeContainer, IContainer, ILinkContainer, IOwned, IHasID, IArgument

```

#### Inheritance

[object](https://learn.microsoft.com/dotnet/api/system.object) ← ObservableObject ← LinkableBase ← ObjectBase ← Object&lt;PropertyEventCore&gt; ← ContainerObject&lt;PropertyEventCore&gt; ← Property ← [PropertyForce](VM.Managed.DAFUL.Force.PropertyForce.md) ← [PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md)

#### Derived

[PropertyBushFile](VM.Managed.DAFUL.Force.PropertyBushFile.md)

#### Implements

IObservableObject, IDisposableObject, ILinkable, IObjectBase, IObject, IEventProvider, IHasKeyObject, ILinkContainerEvent, IVerifiable, IHistoryObjectSerializable, IAttributeContainer, IContainer, ILinkContainer, IOwned, IHasID, IArgument

#### Inherited Members

[PropertyForce.ArgumentType](VM.Managed.DAFUL.Force.PropertyForce.md#VM_Managed_DAFUL_Force_PropertyForce_ArgumentType), [PropertyForce.ReferenceType](VM.Managed.DAFUL.Force.PropertyForce.md#VM_Managed_DAFUL_Force_PropertyForce_ReferenceType), Property.Initialize(Unit.ConvertFactor), Property.PropertyRequestUpdate(object, LinkEventArgs), Property.OnUpdatePropertyImpl(Property, LinkEventArgs), Property.GetUnnamedObjectName(object), Property.FindLocal(string), Property.Draw(Canvas, TMatrix, TMatrix, bool), ContainerObject&lt;PropertyEventCore&gt;.Find(string), ContainerObject&lt;PropertyEventCore&gt;.FindLocal(string), ContainerObject&lt;PropertyEventCore&gt;.GetUnnamedObjectName(object), ContainerObject&lt;PropertyEventCore&gt;.GetNewEntityName(string), ContainerObject&lt;PropertyEventCore&gt;.GetNewEntityName(string, bool, int), ContainerObject&lt;PropertyEventCore&gt;.GetNewEntityName(string, bool, int, int), Object&lt;PropertyEventCore&gt;.GetKey(), Object&lt;PropertyEventCore&gt;.Initialize(Unit.ConvertFactor), Object&lt;PropertyEventCore&gt;.SetIconColor(Canvas), Object&lt;PropertyEventCore&gt;.OnDeserialization(object), Object&lt;PropertyEventCore&gt;.CustomGetObjectData(SerializationInfo, StreamingContext), Object&lt;PropertyEventCore&gt;.RollbackEvent(), Object&lt;PropertyEventCore&gt;.OnDeserializedCore(object), Object&lt;PropertyEventCore&gt;.Key, Object&lt;PropertyEventCore&gt;.UntypedEventCore, Object&lt;PropertyEventCore&gt;.EventCore, Object&lt;PropertyEventCore&gt;.Attributes, ObjectBase.ReplaceEventCore(ObjectEventCore), ObjectBase.SetModifiedCore(ModifiedResult.ModifiedType), ObjectBase.AddPostDeserialize(StreamingContext), ObjectBase.LinkAddedToDocumentCore(IOwned, bool), ObjectBase.SetModified(ModifiedResult.ModifiedType), ObjectBase.SetModified(), ObjectBase.SetModified(ModifiedResult.ModifiedType, IDocument), ObjectBase.DestroyObject(object, LinkEventArgs), ObjectBase.DestroyObject(DestroyEventArgs), ObjectBase.DestroyObject(), ObjectBase.Initialize(Unit.ConvertFactor), ObjectBase.FixUp(ObjectBase), ObjectBase.DoWorkAfterUpdateContents(), ObjectBase.SetOldNameWithNewEntity(ObjectBase, ObjectBase), ObjectBase.SetIconColor(Canvas), ObjectBase.RemoveFromCreatedList(), ObjectBase.PostAddToDocument(), ObjectBase.PostRemoveFromDocument(Document), ObjectBase.GetArgumentList(LinkedList&lt;ObjectBase&gt;), ObjectBase.ResetInvalidEntity(), ObjectBase.OnDeserialization(object), ObjectBase.IsSerializableEvent(Delegate), ObjectBase.CustomGetObjectData(SerializationInfo, StreamingContext), ObjectBase.CheckAndUpdateLink(HashSet&lt;ObjectBase&gt;), ObjectBase.Verify(VerifiedResult), ObjectBase.ConnectProxy(), ObjectBase.RollbackEvent(), ObjectBase.LinkRequestUpdating(object, LinkEventArgs), ObjectBase.LinkRequestUpdate(object, LinkEventArgs), ObjectBase.LinkRequestDestroying(object, LinkEventArgs), ObjectBase.LinkRequestDestroy(object, LinkEventArgs), ObjectBase.LinkAddedToDocument(object, AddToDocEventArgs), ObjectBase.LinkRemovedFromDocument(object, RemoveFromDocEventArgs), ObjectBase.DisposeManagedResources(), ObjectBase.GetDestroyEventExtraData(), ObjectBase.OnLinkReserved(ILink, object, EventArgs), ObjectBase.CreateEntityWhenUpdateContents(Action), ObjectBase.GetObjectByKey(UIntPtr), ObjectBase.FindObjectOnXmlDeserialize(string), ObjectBase.UpdateContents(XmlReader, ObjectBase, string), ObjectBase.UpdateContents(XmlReader, ObjectBase), ObjectBase.UpdateContents(string, string), ObjectBase.UpdateContents(string), ObjectBase.SetFlagWhenXMLFile(string, bool), ObjectBase.IsEqualArray&lt;T&gt;(T\[\], T\[\]), ObjectBase.IsEqualList(List&lt;double&gt;, List&lt;double&gt;), ObjectBase.SetContainer(IOwned, bool), ObjectBase.GetTargetListForUpdate(), ObjectBase.SkipUpdateObjectImpl(), ObjectBase.raise\_OnUpdating(object, LinkEventArgs), ObjectBase.raise\_OnUpdate(object, LinkEventArgs), ObjectBase.raise\_OnDestroying(object, LinkEventArgs), ObjectBase.raise\_OnDestroy(object, LinkEventArgs), ObjectBase.raise\_Destroying(object, Identifier), ObjectBase.raise\_OnAdded(object, AddToDocEventArgs), ObjectBase.raise\_OnRemoved(object, RemoveFromDocEventArgs), ObjectBase.raise\_OnContentsUpdated(object, EventArgs), ObjectBase.Dispose(bool), ObjectBase.SkipModified, ObjectBase.ClearChildInfoBeforeDeserialize, ObjectBase.KeyImpl, ObjectBase.ID, ObjectBase.TopologyEntityTypeName, ObjectBase.ObjectStateForCircularError, ObjectBase.ObjectState, ObjectBase.IsChildExternable, ObjectBase.IsExternable, ObjectBase.Container, ObjectBase.Owner, ObjectBase.Document, ObjectBase.UntypedEventCore, ObjectBase.KernelKey, ObjectBase.Key, ObjectBase.OnContentsUpdated, ObjectBase.OnRemoved, ObjectBase.OnAdded, ObjectBase.Destroying, ObjectBase.OnDestroy, ObjectBase.OnDestroying, ObjectBase.OnUpdate, ObjectBase.OnUpdating, LinkableBase.OnDeserialization(object), ObservableObject.Dispose(), ObservableObject.RaisePropertyChanged(string), ObservableObject.RaisePropertyChanged(string, object, object), ObservableObject.Dispose(bool), ObservableObject.DisposeManagedResources(), ObservableObject.DisposeUnmanagedResources(), ObservableObject.IsDisposed, ObservableObject.TryDisposing, ObservableObject.Disposed, ObservableObject.Disposing, ObservableObject.PropertyChanged

#### Extension Methods

[LinkPropertyItemCache.GetLinkProperties(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkProperties_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkPropertiesAndValues(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkPropertiesAndValues_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkedObjects&lt;T&gt;(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkedObjects__1_System_Object_VM_Models_Pre_LinkPropertyType_)

## Constructors

### PropertyBush()

Initializes a new instance of the  class.

```csharp
public PropertyBush()

```

### PropertyBush(string, string)

Initializes a new instance of the  class.

```csharp
protected PropertyBush(string strProxyName, string strBuildInfo)

```

#### Parameters

`strProxyName` [string](https://learn.microsoft.com/dotnet/api/system.string)

Name of the proxy.

`strBuildInfo` [string](https://learn.microsoft.com/dotnet/api/system.string)

The build info.

## Properties

### ArgumentType

Gets the type of the argument

```csharp
public override ArgumentTypes ArgumentType { get; }

```

#### Property Value

ArgumentTypes

### GraphicDiameter

```csharp
public double GraphicDiameter { get; set; }

```

#### Property Value

[double](https://learn.microsoft.com/dotnet/api/system.double)

### GraphicLength

```csharp
public double GraphicLength { get; set; }

```

#### Property Value

[double](https://learn.microsoft.com/dotnet/api/system.double)

### IsUsePreTorque

Gets or sets a value indicating whether this instance use pre torque.

```csharp
public bool IsUsePreTorque { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### IsUsePreload

Gets or sets a value indicating whether this instance use preload.

```csharp
public bool IsUsePreload { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### IsUseStaticBushing

Gets or sets a value indicating whether this instance use static bushing.

```csharp
public bool IsUseStaticBushing { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### PreTorqueX

Gets or sets the pre torque of x direction.

```csharp
public ExpressionValueVariable PreTorqueX { get; set; }

```

#### Property Value

ExpressionValueVariable

### PreTorqueY

Gets or sets the pre torque of y direction.

```csharp
public ExpressionValueVariable PreTorqueY { get; set; }

```

#### Property Value

ExpressionValueVariable

### PreTorqueZ

Gets or sets the pre torque of z direction.

```csharp
public ExpressionValueVariable PreTorqueZ { get; set; }

```

#### Property Value

ExpressionValueVariable

### PreloadX

Gets or sets the preload of x direction.

```csharp
public ExpressionValueVariable PreloadX { get; set; }

```

#### Property Value

ExpressionValueVariable

### PreloadY

Gets or sets the preload of y direction.

```csharp
public ExpressionValueVariable PreloadY { get; set; }

```

#### Property Value

ExpressionValueVariable

### PreloadZ

Gets or sets the preload of z direction.

```csharp
public ExpressionValueVariable PreloadZ { get; set; }

```

#### Property Value

ExpressionValueVariable

### ReferenceType

Gets the type of the array for argument.

```csharp
public override string ReferenceType { get; }

```

#### Property Value

[string](https://learn.microsoft.com/dotnet/api/system.string)

### RotCType

Gets the input type of the rotational damping.

```csharp
[Obsolete]
public PropertyBush.InputType RotCType { get; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### RotCX

Gets or sets the rotational damping coefficient of x direction.

```csharp
public ExpressionValueVariable RotCX { get; set; }

```

#### Property Value

ExpressionValueVariable

### RotCXSpline

Gets or sets the rotational damping spline of x direction.

```csharp
public Spline RotCXSpline { get; set; }

```

#### Property Value

Spline

### RotCY

Gets or sets the rotational damping coefficient of y direction.

```csharp
public ExpressionValueVariable RotCY { get; set; }

```

#### Property Value

ExpressionValueVariable

### RotCYSpline

Gets or sets the rotational damping spline of y direction.

```csharp
public Spline RotCYSpline { get; set; }

```

#### Property Value

Spline

### RotCZ

Gets or sets the rotational damping coefficient of z direction.

```csharp
public ExpressionValueVariable RotCZ { get; set; }

```

#### Property Value

ExpressionValueVariable

### RotCZSpline

Gets or sets the rotational damping spline of z direction.

```csharp
public Spline RotCZSpline { get; set; }

```

#### Property Value

Spline

### RotKType

Gets the input type of the rotational stiffness.

```csharp
[Obsolete]
public PropertyBush.InputType RotKType { get; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### RotKX

Gets or sets the rotational stiffness coefficient of x direction.

```csharp
public ExpressionValueVariable RotKX { get; set; }

```

#### Property Value

ExpressionValueVariable

### RotKXSpline

Gets or sets the rotational stiffness spline of x direction.

```csharp
public Spline RotKXSpline { get; set; }

```

#### Property Value

Spline

### RotKY

Gets or sets the rotational stiffness coefficient of y direction.

```csharp
public ExpressionValueVariable RotKY { get; set; }

```

#### Property Value

ExpressionValueVariable

### RotKYSpline

Gets or sets the rotational stiffness spline of y direction.

```csharp
public Spline RotKYSpline { get; set; }

```

#### Property Value

Spline

### RotKZ

Gets or sets the rotational stiffness coefficient of z direction.

```csharp
public ExpressionValueVariable RotKZ { get; set; }

```

#### Property Value

ExpressionValueVariable

### RotKZSpline

Gets or sets the rotational stiffness spline of z direction.

```csharp
public Spline RotKZSpline { get; set; }

```

#### Property Value

Spline

### RotationalOneSideBushingX

Gets or sets the flag of rotational one side bushing X.

```csharp
public bool RotationalOneSideBushingX { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### RotationalOneSideBushingY

Gets or sets the flag of rotational one side bushing Y.

```csharp
public bool RotationalOneSideBushingY { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### RotationalOneSideBushingZ

Gets or sets the flag of rotational one side bushing Z.

```csharp
public bool RotationalOneSideBushingZ { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### TransCType

Gets the input type of the translational damping.

```csharp
[Obsolete]
public PropertyBush.InputType TransCType { get; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TransCX

Gets or sets the translational damping coefficient of x direction.

```csharp
public ExpressionValueVariable TransCX { get; set; }

```

#### Property Value

ExpressionValueVariable

### TransCXSpline

Gets or sets the translational damping spline of x direction.

```csharp
public Spline TransCXSpline { get; set; }

```

#### Property Value

Spline

### TransCY

Gets or sets the translational damping coefficient of y direction.

```csharp
public ExpressionValueVariable TransCY { get; set; }

```

#### Property Value

ExpressionValueVariable

### TransCYSpline

Gets or sets the translational damping spline of y direction.

```csharp
public Spline TransCYSpline { get; set; }

```

#### Property Value

Spline

### TransCZ

Gets or sets the translational damping coefficient of z direction.

```csharp
public ExpressionValueVariable TransCZ { get; set; }

```

#### Property Value

ExpressionValueVariable

### TransCZSpline

Gets or sets the translational damping spline of z direction.

```csharp
public Spline TransCZSpline { get; set; }

```

#### Property Value

Spline

### TransKType

Gets the input type of the translational stiffness.

```csharp
[Obsolete]
public PropertyBush.InputType TransKType { get; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TransKX

Gets or sets the translational stiffness coefficient of x direction.

```csharp
public ExpressionValueVariable TransKX { get; set; }

```

#### Property Value

ExpressionValueVariable

### TransKXSpline

Gets or sets the translational stiffness spline of x direction.

```csharp
public Spline TransKXSpline { get; set; }

```

#### Property Value

Spline

### TransKY

Gets or sets the translational stiffness coefficient of y direction.

```csharp
public ExpressionValueVariable TransKY { get; set; }

```

#### Property Value

ExpressionValueVariable

### TransKYSpline

Gets or sets the translational stiffness spline of y direction.

```csharp
public Spline TransKYSpline { get; set; }

```

#### Property Value

Spline

### TransKZ

Gets or sets the translational stiffness coefficient of z direction.

```csharp
public ExpressionValueVariable TransKZ { get; set; }

```

#### Property Value

ExpressionValueVariable

### TransKZSpline

Gets or sets the translational stiffness spline of z direction.

```csharp
public Spline TransKZSpline { get; set; }

```

#### Property Value

Spline

### TranslationalOneSideBushingX

Gets or sets the flag of translational one side bushing X.

```csharp
public bool TranslationalOneSideBushingX { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### TranslationalOneSideBushingY

Gets or sets the flag of translational one side bushing Y.

```csharp
public bool TranslationalOneSideBushingY { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### TranslationalOneSideBushingZ

Gets or sets the flag of translational one side bushing Z.

```csharp
public bool TranslationalOneSideBushingZ { get; set; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### TypeOfRotCX

Gets or sets the type of the rot CX. Use SetRotCXType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfRotCX { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfRotCY

Gets or sets the type of the rot CY. Use SetRotCYType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfRotCY { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfRotCZ

Gets or sets the type of the rot CZ. Use SetRotCZType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfRotCZ { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfRotKX

Gets or sets the type of the rot KX. Use SetRotKXType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfRotKX { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfRotKY

Gets or sets the type of the rot KY. Use SetRotKYType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfRotKY { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfRotKZ

Gets or sets the type of the rot KZ. Use SetRotKZType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfRotKZ { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfTransCX

Gets or sets the type of the trans CX. Use SetTransCXType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfTransCX { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfTransCY

Gets or sets the type of the trans CY. Use SetTransCYType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfTransCY { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfTransCZ

Gets or sets the type of the trans CZ. Use SetTransCZType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfTransCZ { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfTransKX

Gets or sets the type of the trans KX. Use SetTransKXType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfTransKX { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfTransKY

Gets or sets the type of the trans KY. Use SetTransKYType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfTransKY { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

### TypeOfTransKZ

Gets or sets the type of the trans KZ. Use SetTransKZType() when this instance sets for undo/redo

```csharp
public PropertyBush.InputType TypeOfTransKZ { get; set; }

```

#### Property Value

[PropertyBush](VM.Managed.DAFUL.Force.PropertyBush.md).[InputType](VM.Managed.DAFUL.Force.PropertyBush.InputType.md)

## Methods

### Draw(Canvas, TMatrix, TMatrix, bool)

Draws the icon.

```csharp
public override void Draw(Canvas canvas, TMatrix matTBase, TMatrix matTAct, bool bHide)

```

#### Parameters

`canvas` Canvas

The canvas has icon information.

`matTBase` TMatrix

The base transformation.

`matTAct` TMatrix

The action transformation.

`bHide` [bool](https://learn.microsoft.com/dotnet/api/system.boolean)

The hide flag.

### Initialize(ConvertFactor)

Initializes member through unit convert factor.

```csharp
public override void Initialize(Unit.ConvertFactor factor)

```

#### Parameters

`factor` Unit.ConvertFactor

The unit convert factor.

### OnDeserialization(object)

Called when \[deserialization\].

```csharp
protected override void OnDeserialization(object sender)

```

#### Parameters

`sender` [object](https://learn.microsoft.com/dotnet/api/system.object)

The sender.

### OnLinkReserved(ILink, object, EventArgs)

```csharp
protected override void OnLinkReserved(ILink link, object objNotifier, EventArgs args)

```

#### Parameters

`link` ILink

`objNotifier` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` [EventArgs](https://learn.microsoft.com/dotnet/api/system.eventargs)