How to use isLoggingEnabled?

[Andre Pany]

Hi,

I am confused by the description of isLoggingEnabled.

In my unittest version I want to disable logging and use this 
command:
``` d
sharedLog = new NullLogger(LogLevel.off);
```

If have some stdout writeln coding (to avoid the timestamp / 
module prefix):

``` d
private void printRuntimeLog(string logFilePath)
{
     import std.stdio : stdout;

     if (isLoggingEnabled(LogLevel.info))
     {
         logFilePath.readText.strip.splitLines.map!(line => 
"[runtime-log] " ~ line).each!(line => stdout.writeln(line));
         stdout.flush;
     }
}
```

I just want to check whether LogLevel.info or more is active. But 
the method isLoggingEnabled seems to expect the LogLevel 3 times?

```
@safe bool isLoggingEnabled()(LogLevel ll, LogLevel loggerLL, 
LogLevel globalLL, lazy bool condition = true);
```

Another strange thing is, the description of isLogginEnabled 
(https://dlang.org/phobos/std_experimental_logger_core.html#.isLoggingEnabled) mentions a call with only 1 logLevel argument, but this method does not seems to exist:

> pure bool isLoggingEnabled()(LogLevel ll) @safe nothrow @nogc

Is there an easy way to check if log level is "info" or more?

Kind regards
André