public static T AssertConfigValueIsPresent <T>(
this IConfigProvider provider,
string key,
T valueIfNotPresent = default(T))
{
T val = provider.GetPropertyValue <T>(key);
if (EqualityComparer <T> .Default.Equals(val, default(T)))
{
if (valueIfNotPresent.Equals(default(T)))
{
throw new ArgumentNullException("Config value is not present : " + key);
}
else
{
val = valueIfNotPresent;
}
}
return(val);
}
