Значение xwEx для log4j2?

Большое спасибо Кристоф за ответ на гитхабе:

If I'm not mistaken this is a Spring-Boot specific converter plugin for log4j2. See ExtendedWhitespaceThrowablePatternConverter:

@Plugin(name = "ExtendedWhitespaceThrowablePatternConverter", category = PatternConverter.CATEGORY)
@ConverterKeys({ "xwEx", "xwThrowable", "xwException" })
public final class ExtendedWhitespaceThrowablePatternConverter
      extends ThrowablePatternConverter {
    // ....
}

As I'm not a team member don't take this for granted though.

Cheers, Christoph