QGIS/resources/function_help/json/map_akeys

{
  "name": "map_akeys",
  "type": "function",
  "description": "Returns all the keys of a map as an array.",
  "arguments": [ {"arg":"map","description":"a map"}],
  "examples": [ { "expression":"map_akeys(map('1','one','2','two'))", "returns":"[ '1', '2' ]"}]
}