code: public void setSeverity(Severity severity) {
  	
          if ((severity.getOrdinal() < SEVERITY_INFO.getOrdinal()) || 
  	    (severity.getOrdinal() > SEVERITY_FATAL.getOrdinal())) {
              throw new IllegalArgumentException(String.valueOf(severity));
          }
          this.severity = severity;
  	
      }
docs: <p>Set the severity level.</p>
  
  @param severity The new severity level
  
  @throws IllegalArgumentException if the specified severity level
  is not one of the supported values