code: def get_behaviors(brain_or_object):
      
      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
docs: 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