Microsoft.CodeAnalysis.Editing.ImportAdderService.AddPotentiallyConflictingImportsAsync(Microsoft.CodeAnalysis.SemanticModel, Microsoft.CodeAnalysis.SyntaxNode, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.INamespaceSymbol>, System.Collections.Generic.HashSet<Microsoft.CodeAnalysis.INamespaceSymbol>, System.Threading.CancellationToken)