passwordHash property
The user's hashed password (base64-encoded), only if Firebase Auth hashing
algorithm (SCRYPT) is used. If a different hashing algorithm had been used
when uploading this user, as is typical when migrating from another Auth
system, this will be an empty string. If no password is set, this is
null. This is only available when the user is obtained from
_BaseAuth.listUsers.
Implementation
final String? passwordHash;