| label | Display text of the proposition. |
| replacement | Text used to auto-complete the query when selected. |
| help | Help text used to display additional information about the search proposition. |
| priority | Value used to sort the propositions among other search propositions when displaying choices to the user. |
| moveCursor | Indicates when the text cursor should be moved when auto-completing the query with the selected proposition. |
| icon | Icon used to display the proposition. |
Create a new search proposition.
Used with SearchProvider.fetchPropositions.