If a DID has one or more such keys, we say that the DID "controls" itself, meaning that it can modify its DID Document.
We have intentionally decided to allow keys with this relationship to also add schemas, revoke credentials, etc., on the chain.
如果一个 DID 有一个或多个这样的键，我们说这个 DID “控制”自己，这意味着它可以修改它的 DID 文档。
我们有意决定允许具有这种关系的密钥也可以在链上添加模式、撤销凭据等。