public static bool IsTaskOrTaskOfT(ITypeSymbol typeSymbol)
{
if (typeSymbol == null)
{
return(false);
}
INamedTypeSymbol namedTypeSymbol = SymbolUtility.GetPossiblyAwaitableType(typeSymbol);
if (namedTypeSymbol == null)
{
return(false);
}
return(namedTypeSymbol.HasMetadataName(MetadataNames.System_Threading_Tasks_Task) ||
namedTypeSymbol.OriginalDefinition.EqualsOrInheritsFrom(MetadataNames.System_Threading_Tasks_Task_T));
}