@startuml
'https://plantuml.com/component-diagram


package "域A(权限组X)" {
  [代码a]
}

package "域B(权限组Y)" {
  [代码b]
}

package "域C(权限组Z)" {
  [代码c]
}

[代码a] --> [系统域]
[代码b] --> [系统域]
[代码c] --> [系统域]

[系统域] --> [操作系统和本地资源]


@enduml