public static Level resolveLevel(final String anyLevelName) {
    Level log4jLevel = ANY_NAME_TO_LEVEL.get(anyLevelName.toUpperCase());
    // make sure any unrecognizable log level is assigned a most specific level
    return log4jLevel == null ? Level.OFF : log4jLevel;
  }
Convert any string representation of a logging level to a Log4J2 {@code Level}. Returns
{@code Level.OFF} if invalid.

<p>
resolve the log4j level from any log statement in the log file.
geode-core/src/main/java/org/apache/geode/logging/internal/log4j/LogLevel.java