Represents the selection of one or more object types from a list. The list may or may not allow multiple selections.
| Field | Type | Description |
| object_type | string | Will always be "objecttype". |
| is_valid | True|False | True if at least one object type is selected (exactly one if multiple selections are not allowed). |
| value | string | Delimited string containing the values from all of the selected options. For objecttype fields you do not typically care about this - use values instead. |
| output | html | String containing the text from all of the selected options. |
| output_in_list | html | Same as output. |
| field_id | string | The identifier for this field. |
| options | list | A list containing all of the available object type options. |
| values | list | A list containing all of the selected object types. |
| count | number | The number of selected object types. |