an ActivityPub behavior
id
uuid
abef3a0a-d3c4-4dee-a320-b28837d0bcd8
name
content
The followers collection MUST be either an OrderedCollection or a Collection
origin

The origin of a normative behavior is where it originated, e.g. normative language in a protocol specification.

origin.source
https://www.w3.org/TR/activitypub/
origin.section
origin.selector.exact
The followers collection MUST be either an OrderedCollection or a Collection
in context
Every actor SHOULD have a followers collection. This is a list of everyone who has sent a Follow activity for the actor, added as a side effect. This is where one would find a list of all the actors that are following the actor. The followers collection MUST be either an OrderedCollection or a Collection and MAY be filtered on privileges of an authenticated user or as appropriate when no authentication is given.
https://www.w3.org/TR/activitypub/
JSON
{
  "type": "Behavior",
  "uuid": "abef3a0a-d3c4-4dee-a320-b28837d0bcd8",
  "content": "The followers collection MUST be either an OrderedCollection or a Collection",
  "origin": {
    "source": "https://www.w3.org/TR/activitypub/",
    "section": {
      "id": "https://www.w3.org/TR/activitypub/#followers",
      "branch": [
        5,
        3
      ]
    },
    "selector": {
      "type": "TextQuoteSelector",
      "prefix": "Every actor SHOULD have a followers collection. This is a list of everyone who has sent a Follow activity for the actor, added as a side effect. This is where one would find a list of all the actors that are following the actor.\n",
      "exact": "The followers collection MUST be either an OrderedCollection or a Collection\n",
      "suffix": "and MAY be filtered on privileges of an authenticated user or as appropriate when no authentication is given.\n"
    }
  }
}