specifies the level
at which a logging request is applied for the specified logger object.
Valid values are TRACE, DEBUG, INFO, WARN, ERROR, and FATAL.
Requirement:The level must be enclosed in double quotation marks.
A logging request is applied if its level is greater than the level
of the logger. Otherwise, the logging request is ignored. Loggers
without an explicitly assigned level inherit their level from the
hierarchy. For more information about the logging levels, see Logging Thresholds.