Contains multiple galleries.
| Field | Type | Description |
| object_type | string | "galleries" |
| is_valid | true/false | true if this contains at least one gallery |
| prepended | list of galleries | galleries that will be listed at the beginning of the items list |
| fetched | list of galleries | The primary list of galleries to be included in the items list |
| appended | list of galleries | galleries that will be listed at the end of the items list |
| appended_unique | list of galleries | galleries that will be listed at the end of the items list, excluding any galleries that are already included in either the prepended or fetched lists |
| items | list of galleries | The full list of galleries in the proper order and uniqueness, including prepended, fetched, and appended galleries |
| size | number | The total number of items in the list of items, including prepended, fetched, and appended galleries |
| limit | number | The maximum number of galleries that could have been fetched dynamically from the database |
| start | number | The 1-based index of the first gallery that was (or would have been) dynamically fetched from the database |
| page | number | The 1-based index of the first "page" of galleries that could have been fetched dynamically from the database - as determined by the start and limit properties |
| total_count | number | The total number of galleries in the database that matched the provided filter parameters when fetching the list of fetched galleries |
| total_pages | number | The total number of "pages" of results that matched the provided filter parameters when fetching the list of fetched galleries - as determined by the total_count and limit properties |
| output | html | The default output that the galleries will produce when it is output directly to the template - using the "output_in_list" property of each gallery in the items list |