How to create multiple users with different path properties

[super-yyyfeng]

const webdav = require('webdav-server').v2;

const userManager = new webdav.SimpleUserManager();
const def= userManager.addUser('def', 'def', false);
const abc= userManager.addUser('abc', 'abc', false);

const privilegeManager = new webdav.SimplePathPrivilegeManager();
privilegeManager.setRights(def, '/', [ 'all' ]);
privilegeManager.setRights(abc, '/abc', ['canRead','canWrite']);

const server = new webdav.WebDAVServer({
port:1900,
// HTTP Digest authentication with the realm 'Default realm'
httpAuthentication: new webdav.HTTPDigestAuthentication(userManager, 'Default realm'),
privilegeManager: privilegeManager
});

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The above code cannot be logged in with abc account, only with def