getAddresses method
Implementation
Future<AssetAddresses?> getAddresses(String symbol) async {
var response = await request(
'blockchain.asset.list_addresses_by_asset',
[symbol],
);
if (response.runtimeType == String) return null; // todo: error
response = response as Map<String, int>;
if (response.isNotEmpty) {
return AssetAddresses(asset: symbol, assetCountByAddress: response);
}
return null;
}