# API Changes in v2.19 > Reference: API changes of Opc.UaFx.Advanced in v2.19: 36 added, 1 removed, 10 changed, 0 obsoleted.
Releases
v2.19.0, v2.19.1, v2.19.2
Compared with
v2.18.5
Package
Opc.UaFx.Advanced
## Added ### Opc.UaFx | Symbol | Signature | |---|---| | [IOpcNodeInfo.Child](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.iopcnodeinfo/members#child-opc-uafx-opcnamepath) | `IOpcNodeInfo Child(OpcNamePath namePath)` | | [OpcEvent.GetValue<T>](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcevent/members#getvalue) | `protected T GetValue(string memberName = "")` | | [OpcNamePath.GetEnumerator](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/members#getenumerator) | `public IEnumerator GetEnumerator()` | | [OpcNodeTypeInfo.Child](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodetypeinfo/members#child-opc-uafx-opcnamepath) | `public IOpcNodeInfo Child(OpcNamePath namePath)` | ### Opc.UaFx.Client | Symbol | Signature | |---|---| | [OpcClient.GetType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/gettype#gettype-opc-uafx-opcname) | `public IOpcType GetType(OpcName name)` | | [OpcClient.GetType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/gettype#gettype-opc-uafx-opcnodeid) | `public IOpcType GetType(OpcNodeId typeId)` | | [OpcClient.GetType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/gettype#gettype-system-string) | `public IOpcType GetType(string name)` | | [OpcClient.GetType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/gettype#gettype-system-type) | `public IOpcType GetType(Type underlyingType)` | | [OpcClient.GetTypes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/gettypes) | `public IOpcType[] GetTypes()` | | [OpcClient.IsSubtypeOf](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcclient/issubtypeof) | `public bool IsSubtypeOf(OpcNodeId subtypeId, OpcNodeId typeId)` | | [OpcNodeInfo.Child](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcnodeinfo/members#child-opc-uafx-opcname) | `public OpcNodeInfo Child(OpcName name)` | | [OpcNodeInfo.Child](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcnodeinfo/members#child-opc-uafx-opcnamepath) | `public OpcNodeInfo Child(OpcNamePath namePath)` | ### Opc.UaFx.Server | Symbol | Signature | |---|---| | [OpcServer.OnRequestJudgement](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcserver/members#onrequestjudgement) | `protected virtual void OnRequestJudgement(OpcRequestJudgementEventArgs e)` | | [OpcServer.RequestJudgement](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcserver/members#requestjudgement) | `public event OpcRequestJudgementEventHandler RequestJudgement` | ### Opc.UaFx.Services | Symbol | Signature | |---|---| | [OpcAddNodesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcaddnodesresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcAddReferencesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcaddreferencesresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcBrowseNextResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowsenextresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcBrowseResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowseresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcCallMethodsResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opccallmethodsresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcDeleteNodesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcdeletenodesresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcDeleteReferencesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcdeletereferencesresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcReadNodesHistoryResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcreadnodeshistoryresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcReadNodesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcreadnodesresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcRegisterNodesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcregisternodesresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcRequestImpeachment](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcrequestimpeachment/)2 members | `public enum OpcRequestImpeachment` | | [OpcRequestJudgementEventArgs](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcrequestjudgementeventargs/)6 members | `public class OpcRequestJudgementEventArgs : EventArgs` | | [OpcRequestJudgementEventHandler](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcrequestjudgementeventhandler/) | `public delegate void OpcRequestJudgementEventHandler(object sender, OpcRequestJudgementEventArgs e)` | | [OpcServiceRequest.ServiceName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcservicerequest/members#servicename) | `public string ServiceName { get; }` | | [OpcServiceResponse.Exception](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcserviceresponse/members#exception) | `public OpcException Exception { get; }` | | [OpcServiceResponse.GetResultExceptions](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcserviceresponse/members#getresultexceptions) | `public IEnumerable GetResultExceptions()` | | [OpcServiceResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcserviceresponse/members#getresults) | `public abstract IEnumerable GetResults()` | | [OpcServiceResponse.ServiceName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcserviceresponse/members#servicename) | `public string ServiceName { get; }` | | [OpcTranslatePathsResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opctranslatepathsresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcUnregisterNodesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcunregisternodesresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcUpdateNodesHistoryResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcupdatenodeshistoryresponse/members#getresults) | `public override IEnumerable GetResults()` | | [OpcWriteNodesResponse.GetResults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcwritenodesresponse/members#getresults) | `public override IEnumerable GetResults()` | ## Removed ### Opc.UaFx.Client | Symbol | Signature | |---|---| | OpcClient.BrowseNodeIds | `public IEnumerable BrowseNodeIds(BrowsePathCollection pathsToTranslate)` | ## Changed ### Opc.UaFx | Symbol | Signature (old, new) | |---|---| | [IOpcReadOnlyNodeDataStore](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.iopcreadonlynodedatastore/) | `public interface IOpcReadOnlyNodeDataStore`
`public interface IOpcReadOnlyNodeDataStore : IOpcNamespaceResolver` | | [OpcEventNodeSnapshot](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opceventnodesnapshot/) | `public class OpcEventNodeSnapshot : OpcInstanceNodeSnapshot, IOpcReadOnlyNodeDataStore`
`public class OpcEventNodeSnapshot : OpcInstanceNodeSnapshot, IOpcReadOnlyNodeDataStore, IOpcNamespaceResolver` | | [OpcEventNodeView](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opceventnodeview/) | `public class OpcEventNodeView : IOpcReadOnlyNodeDataStore`
`public class OpcEventNodeView : IOpcReadOnlyNodeDataStore, IOpcNamespaceResolver` | | [OpcFileReadMethodNode.FileReadCallback](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilereadmethodnode.filereadcallback/) | `[CLSCompliant(false)] public delegate byte[] OpcFileReadMethodNode.FileReadCallback(uint fileHandle, int length)`
`[CLSCompliant(false)] public delegate ByteString OpcFileReadMethodNode.FileReadCallback(uint fileHandle, int length)` | | [OpcFileReadMethodNode.FileReadExCallback](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilereadmethodnode.filereadexcallback/) | `[CLSCompliant(false)] public delegate byte[] OpcFileReadMethodNode.FileReadExCallback(OpcMethodContext context, uint fileHandle, int length)`
`[CLSCompliant(false)] public delegate ByteString OpcFileReadMethodNode.FileReadExCallback(OpcMethodContext context, uint fileHandle, int length)` | | [OpcFileWriteMethodNode.FileWriteCallback](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilewritemethodnode.filewritecallback/) | `[CLSCompliant(false)] public delegate void OpcFileWriteMethodNode.FileWriteCallback(uint fileHandle, byte[] data)`
`[CLSCompliant(false)] public delegate void OpcFileWriteMethodNode.FileWriteCallback(uint fileHandle, ByteString data)` | | [OpcFileWriteMethodNode.FileWriteExCallback](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilewritemethodnode.filewriteexcallback/) | `[CLSCompliant(false)] public delegate void OpcFileWriteMethodNode.FileWriteExCallback(OpcMethodContext context, uint fileHandle, byte[] data)`
`[CLSCompliant(false)] public delegate void OpcFileWriteMethodNode.FileWriteExCallback(OpcMethodContext context, uint fileHandle, ByteString data)` | | [OpcFilterOperand.OfType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilteroperand/members#oftype-opc-uafx-opcnodeid) | `public static OpcContentFilterElement OfType(object value)`
`public static OpcContentFilterElement OfType(OpcNodeId typeId)` | | [OpcInstanceNodeSnapshot](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcinstancenodesnapshot/) | `public class OpcInstanceNodeSnapshot : IOpcReadOnlyNodeDataStore`
`public class OpcInstanceNodeSnapshot : IOpcReadOnlyNodeDataStore, IOpcNamespaceResolver` | | [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) | `public class OpcNamePath : IEquatable, IComparable, IComparable`
`public class OpcNamePath : IEnumerable, IEnumerable, IEquatable, IComparable, IComparable` |