method
WithJoinedVariablesCore
Microsoft.CodeAnalysis.VisualBasic.Microsoft.CodeAnalysis.VisualBasic.Syntax.JoinClauseSyntax.WithJoinedVariablesCore(Microsoft.CodeAnalysis.SeparatedSyntaxList(Of Microsoft.CodeAnalysis.VisualBasic.Microsoft.CodeAnalysis.VisualBasic.Syntax.CollectionRangeVariableSyntax))