def METHOD_NAME():
    xcrun = XCRun()
    hold = None
    command = "xcodebuild build -project Client.xcodeproj -scheme Fennec -configuration Fennec -sdk iphonesimulator"
    try:
        subprocess.check_output(
            command,
            cwd=os.chdir("../../"),
            stderr=subprocess.STDOUT,
            universal_newlines=True,
            shell=True)
    except subprocess.CalledProcessError:
        raise