defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("appendInt failed: %v", r)
		}
	}()
	m[key] = append(m[key], 2018)
	return nil
}

func appendStr(m map[interface{}][]string, key interface{}) (err error) {
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("addStr failed: %v", r)
		}
	}()
	m[key] = append(m[key], "hello, go")
	return nil
}

# Root logger option
log4j.rootLogger=INFO, stderr

# Direct log messages to stdout
log4j.appender.stderr.ImmediateFlush=true
log4j.appender.stderr=org.apache.log4j.ConsoleAppender
log4j.appender.stderr.Target=System.err
log4j.appender.stderr.layout=org.apache.log4j.PatternLayout
log4j.appender.stderr.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n


log4j.logger.jcifs: INFO
#log4j.logger.jcifs.internal.smb2.create: DEBUG

                  System.out.println(appender);
                  System.out.println(layout);
               }

               private <E> void alsoExpectingBaseLayout(ConsoleAppender<E> appender, JsonLayoutBase<E> layout) {
                  System.out.println(appender);
                  System.out.println(layout);
               }
            }
        """
    }

log4j.rootLogger=INFO,STDOUT
log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
log4j.appender.STDOUT.ImmediateFlush=true
log4j.appender.STDOUT.layout=org.apache.log4j.PatternLayout

		t.Errorf("got: %s, want: %s", got, want)
	}

	errs = AppendErr(errs, nil)
	if got, want := errs.String(), ""; got != want {
		t.Errorf("got: %s, want: %s", got, want)
	}

	errs = AppendErr(errs, fmt.Errorf("err1"))
	if got, want := errs.String(), "err1"; got != want {
		t.Errorf("got: %s, want: %s", got, want)
	}

	errs = AppendErr(errs, nil)
	errs = AppendErr(errs, fmt.Errorf("err2"))

		if err != nil {
			errs = util.AppendErr(errs, err)
			metrics.ManifestPatchErrorTotal.Increment()
			continue
		}

		err = tpath.WritePathContext(inc, v, false)
		if err != nil {
			errs = util.AppendErr(errs, err)
			metrics.ManifestPatchErrorTotal.Increment()
		}
	}
	oy, err := yaml2.Marshal(bo)
	if err != nil {
		return "", util.AppendErr(errs, err)
	}
	return string(oy), errs

<configuration>
    
  <conversionRule conversionWord="coloredLevel" converterClass="play.api.Logger$ColoredLevel" />

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%coloredLevel - %logger - %message%n%xException</pattern>
    </encoder>
  </appender>

  <!--
    The logger name is typically the Java/Scala package name.

log4j.rootLogger=INFO,STDOUT
log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
log4j.appender.STDOUT.ImmediateFlush=true
log4j.appender.STDOUT.layout=org.apache.log4j.PatternLayout

log4j.rootLogger=WARN,STDOUT
log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
log4j.appender.STDOUT.ImmediateFlush=true
log4j.appender.STDOUT.layout=org.apache.log4j.PatternLayout
log4j.appender.STDOUT.layout.ConversionPattern=%-5p %d [%t] %m%n

		}
		out = AppendErr(out, fmt.Errorf("%s%s", ee, times))
		// reset seen log count
		logCountMap[item] = 0
	}
	return out
}

// NewErrs returns a slice of error with a single element err.
// If err is nil, returns nil.
func NewErrs(err error) Errors {
	if err == nil {
		return nil
	}
	return []error{err}
}