@Before
    public void setup() {
        System.setErr(scps);
        // System.setProperty(SimpleLogger.LOG_FILE_KEY, "System.err");
        // LoggerFactoryFriend.reset();
    }
Tests that output in multithreaded environments is not mingled.

See also https://jira.qos.ch/browse/SLF4J-515
slf4j-simple/src/test/java/org/slf4j/simple/multiThreadedExecution/MultithereadedExecutionTest.java