Returns a C{dict} containing meta data based on the supplied class, useful
    for class aliasing.

    @rtype: C{dict}
    @since: 0.5

def get_class_meta(klass):
    """
    Returns a C{dict} containing meta data based on the supplied class, useful
    for class aliasing.

    @rtype: C{dict}
    @since: 0.5
    """
    if not isinstance(klass, python.class_types) or klass is object:
        raise TypeError('klass must be a class object, got %r' % type(klass))

    meta = {
        'static_attrs': None,
        'exclude_attrs': None,
        'readonly_attrs': None,
        'proxy_attrs': None,
        'amf3': None,
        'dynamic': None,
        'alias': None,
        'external': None,
        'synonym_attrs': None
    }

    if not hasattr(klass, '__amf__'):
        return meta

    a = klass.__amf__

    if type(a) is dict:
        in_func = lambda x: x in a
        get_func = a.__getitem__
    else:
        in_func = lambda x: hasattr(a, x)
        get_func = lambda x: getattr(a, x)

    for prop in ['alias', 'amf3', 'dynamic', 'external']:
        if in_func(prop):
            meta[prop] = get_func(prop)

    for prop in ['static', 'exclude', 'readonly', 'proxy', 'synonym']:
        if in_func(prop):
            meta[prop + '_attrs'] = get_func(prop)

    return meta