Controller：控制者
中文释义
容器的控制者是对容器具有管理权限的个人、组织或其他容器。 控制者由其负责人标识。 例如，容器的控制者可以升级容器的 WebAssembly代码或删除容器。
Wiki Definition
A controller of a canister is a person, organization, or other canister that has administrative rights over the canister. Controllers are identified by their principals. For example, a controller of a canister can upgrade the WebAssembly code of the canister or delete the canister. English definition link