Microsoft.CodeAnalysis.UseNullPropagation.AbstractUseNullPropagationCodeFixProvider<TAnalyzer, TSyntaxKind, TExpressionSyntax, TStatementSyntax, TConditionalExpressionSyntax, TBinaryExpressionSyntax, TInvocationExpressionSyntax, TConditionalAccessExpressionSyntax, TElementAccessExpressionSyntax, TMemberAccessExpressionSyntax, TElementBindingExpressionSyntax, TIfStatementSyntax, TExpressionStatementSyntax, TElementBindingArgumentListSyntax>.PostProcessElseIf(TIfStatementSyntax, TStatementSyntax)