private static string ToString <T>(MultiValuedProperty <T> value)
{
Func <T, string> func = null;
if (value == null)
{
return(string.Empty);
}
string separator = ", ";
if (func == null)
{
func = ((T v) => TaskCommon.ToStringOrNull(v));
}
return(string.Join(separator, value.Select(func)));
}