Show the layer documentation for a specific layer (public/private) in JSON format. Public layer documentation list the attributes and corresponding official attribute description, for private layers attribute description might be empty.get https://smap.hereapi.com/v8/maps/layers/docQuery ParamslayerstringrequiredmapNamestringmap name. Optional for public HERE maps and for private BYOD maps. If not specified, the layer doc available in all maps are retrievedcallbackstringSpecifies the function used to wrap the JSON response.apiKeystringA key generated specifically to authenticate API requests. For more information on how to get an API key, see https://developer.here.com/documentation/identity-access-management/dev_guide/index.html . Other authentication options are Bearer token, see https://developer.here.com/documentation/identity-access-management/dev_guide/index.html or app_id with app_code for backward compatibility.Response 200OKUpdated last month