assetIssuer property Null safety

String? assetIssuer
read / write

(optional) The issuer of the stellar asset the user wants to withdraw with the anchor. If asset_issuer is not provided, the anchor should use the asset issued by themselves as described in their TOML file. If 'native' is specified as the asset_code, asset_issuer must be not be set.

Implementation

String? assetIssuer;