try {
            ByteArrayOutputStream errContent = new ByteArrayOutputStream();
            System.setErr(new PrintStream(errContent));

            String[] args = { "--help" };
            // Note: main calls System.exit, so we can't test it directly
            // Instead, we test the parsing logic separately

            System.setErr(originalErr);
        } catch (Exception e) {
            System.setErr(originalErr);
        }

# Dependencies with yield { #dependencies-with-yield }

FastAPI supports dependencies that do some <abbr title='sometimes also called "exit code", "cleanup code", "teardown code", "closing code", "context manager exit code", etc.'>extra steps after finishing</abbr>.

To do this, use `yield` instead of `return`, and write the extra steps (code) after.

/// tip

Make sure to use `yield` one single time per dependency.

///

/// note | Technical Details

APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit

# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum

warn () {
    echo "$*"
} >&2

die () {
    echo
    echo "$*"
    echo
    exit 1
} >&2

# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false

            Thread.interrupted();
            if (interruptingThread.isAlive()) {
              // This will be hidden by test-output redirection:
              logger.severe("InterruptenatorTask did not exit; future tests may be affected");
              /*
               * This won't do any good under JUnit 3, but I'll leave it around in
               * case we ever switch to JUnit 4:
               */
              fail();

        sleep 5;
        counter=$$(($$counter + 1));
      done;
      # timeout handling
      if [ $$counter -gt 20 ]; then
        echo "Error: Database failed to start within timeout";
        exit 1;
      fi;
      # keep the container running: wait for the database process in the foreground
      wait

curl -m 1 -s "http://169.254.169.254/latest/meta-data/instance-id"
IS_EC2_INSTANCE=$?
if [ $IS_EC2_INSTANCE -ne 0 ]; then
  echo "Not running on an EC2 instance, skipping the configuration"
  exit 0
fi

# TAG
EC2_INSTANCE_TYPE=$(curl -s "http://169.254.169.254/latest/meta-data/instance-type")
echo "##teamcity[addBuildTag 'ec2-instance-type=$EC2_INSTANCE_TYPE']"

                  exit 1
              fi

		defer ticker.Stop()
		var exit bool
		for !exit {
			select {
			case <-ticker.C:
			case <-ctx.Done():
				exit = true
			}
			metaMu.Lock()
			meta := *mc.meta
			meta, err = o.updateMetacacheListing(meta, rpc)
			if err == nil && time.Since(meta.lastHandout) > metacacheMaxClientWait {
				cancel()
				exit = true
				meta.status = scanStateError

     */
    public static void main(final String[] args) throws Exception {
        if (args.length < 1) {
            logger.error("usage: TestLocking [-t <numThreads>] [-i <numIter>] [-d <delay>] url");
            System.exit(1);
        }

        final TestLocking t = new TestLocking();
        t.ltime = System.currentTimeMillis();

        for (int ai = 0; ai < args.length; ai++) {
            if (args[ai].equals("-t")) {

        // Cannot directly test main as it calls System.exit
        // Test argument parsing instead
        SuggestCreator.Options options = new SuggestCreator.Options();
        assertNotNull(options);
    }

    // Test main method with valid arguments
    public void test_main_validArguments() {
        // Cannot directly test main as it calls System.exit
        // Test options parsing instead