public static bool IsTaskOrTaskOfT(ITypeSymbol typeSymbol)
{
return(typeSymbol != null &&
SymbolUtility.CanPossiblyBeAwaitable(typeSymbol) &&
(typeSymbol is INamedTypeSymbol namedTypeSymbol) &&
(namedTypeSymbol.HasMetadataName(MetadataNames.System_Threading_Tasks_Task) ||
namedTypeSymbol.OriginalDefinition.EqualsOrInheritsFrom(MetadataNames.System_Threading_Tasks_Task_T)));
}