Param(webservice.PathParameter("devops","DevOps project's ID, e.g. project-RRRRAzLBlLEm")).
Param(webservice.PathParameter("credential","credential's ID, e.g. dockerhub-id")).
Param(webservice.QueryParameter("content",`
Get extra credential content if this query parameter is set.
Specifically, there are three types of info in a credential. One is the basic info that must be returned for each query such as name, id, etc.
The second one is non-encrypted info such as the username of the username-password type of credential, which returns when the "content" parameter is set to non-empty.
The last one is encrypted info, such as the password of the username-password type of credential, which never returns.