def METHOD_NAME(system, integrator, platform=None):
    """Create a Context.
    If platform is None, GLOBAL_ALCHEMY_PLATFORM is used.
    """
    if platform is None:
        platform = GLOBAL_FORCES_PLATFORM
    if platform is not None:
        context = openmm.Context(system, integrator, platform)
    else:
        context = openmm.Context(system, integrator)
    return context