Implement this method to check if the given instance represents a valid server of this service. 
Namespace: Autodesk.Revit.DB.ExternalService
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2013 
Syntax
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Parameters
- server
- Type: Autodesk.Revit.DB.ExternalServiceIExternalServer
 An instance of a server that is to be validated.
Return Value
True if the server is valid, False otherwiseRemarks
 This method is invoked by the framework upon registration of a server for this service. The simplest implementation would be to test whether the type of the object is as expected, but a service may have other rules for validating its servers.