*class(
  *id=h;
  *name=hash;
  *superclass=str
);
*class(
  *id=p;
  *name=permissions;
  *superclass=arr
);
*class(
  *id=custodian;
  *assign=[
    [h;p]
  ];
  *superclass=map
);
*class(
  *id=c;
  *name=custodians;
  *assign=[[custodian*]];
  *superclass=arr
);
*class(
  *id=b;
  *name=branches;
  *superclass=str
);