Iterate over all behaviors that are assigned to the object

    :param brain_or_object: A single catalog brain or content object
    :type brain_or_object: ATContentType/DexterityContentType/CatalogBrain
    :returns: Behaviors
    :rtype: list

def get_behaviors(brain_or_object):
    """Iterate over all behaviors that are assigned to the object

    :param brain_or_object: A single catalog brain or content object
    :type brain_or_object: ATContentType/DexterityContentType/CatalogBrain
    :returns: Behaviors
    :rtype: list
    """
    obj = get_object(brain_or_object)
    if not is_dexterity_content(obj):
        fail(400, "Only Dexterity contents can have assigned behaviors")
    assignable = IBehaviorAssignable(obj, None)
    if not assignable:
        return {}
    out = {}
    for behavior in assignable.enumerateBehaviors():
        for name, field in getFields(behavior.interface).items():
            out[name] = field
    return out