def to_youtrack_subsystem(trac_component, yt_bundle):
    """
    Converts trac component to YT subsystem.

    Args:
        trac_component: Trac component to convert.
        yt_bundle: YT field bundle to create component in.

    Returns:
        YT field, that has same name, owner and description, as trac component has.

    """
    yt_subsystem = yt_bundle.createElement(trac_component.name)
    yt_subsystem.owner = trac_component.owner
    yt_subsystem.description = trac_component.description
    return yt_subsystem