internal static ExpressionSyntax CheckAndUnwrapRefExpression(
this ExpressionSyntax syntax,
DiagnosticBag diagnostics,
out RefKind refKind)
{
refKind = RefKind.None;
if (syntax?.Kind() == SyntaxKind.RefExpression)
{
refKind = RefKind.Ref;
syntax = ((RefExpressionSyntax)syntax).Expression;
syntax.CheckDeconstructionCompatibleArgument(diagnostics);
}
return(syntax);
}