private static bool TryGetElementAccessExpression(SyntaxNode root, int position, ISyntaxFactsService syntaxFacts, SignatureHelpTriggerReason triggerReason, CancellationToken cancellationToken, out ExpressionSyntax identifier, out SyntaxToken openBrace)
{
return(CompleteElementAccessExpression.TryGetSyntax(root, position, syntaxFacts, triggerReason, cancellationToken, out identifier, out openBrace) ||
IncompleteElementAccessExpression.TryGetSyntax(root, position, syntaxFacts, triggerReason, cancellationToken, out identifier, out openBrace) ||
ConditionalAccessExpression.TryGetSyntax(root, position, syntaxFacts, triggerReason, cancellationToken, out identifier, out openBrace));
}