in src/AWS.Logger.AspNetCore/AWSLoggerProvider.cs [56:62]
public AWSLoggerProvider(AWSLoggerConfig config, Func<string, LogLevel, bool> filter, Func<LogLevel, object, Exception, string> formatter = null)
{
_scopeProvider = NullExternalScopeProvider.Instance;
_core = new AWSLoggerCore(config, _userAgentString);
_customFilter = filter;
_customFormatter = formatter;
}