/// <summary>
/// Create a <see cref="SymbolAndDeclaration{IEventSymbol, EventDeclarationSyntax}"/> is symbol exists.
/// </summary>
/// <param name="symbol">The <see cref="IEventSymbol"/>.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> that cancels the operation.</param>
/// <param name="result">The <see cref="SymbolAndDeclaration{IEventSymbol, EventDeclarationSyntax}"/>.</param>
/// <returns>True if the symbol exists.</returns>
public static bool TryCreate(IEventSymbol symbol, CancellationToken cancellationToken, out SymbolAndDeclaration <IEventSymbol, EventDeclarationSyntax> result)
{
if (symbol is null)
{
throw new System.ArgumentNullException(nameof(symbol));
}
if (symbol.TrySingleEventDeclaration(cancellationToken, out var declaration))
{
result = new SymbolAndDeclaration <IEventSymbol, EventDeclarationSyntax>(symbol, declaration);
return(true);
}
result = default;
return(false);
}