AuthenticationManager (Salespoint 7.2.2.RELEASE API)

```
@Service
public interface AuthenticationManager
```
Application component for authentication related use cases.

Author:

Oliver Gierke

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Optional<UserAccount>`	`getCurrentUser()`	Returns the `UserAccount` of the currently logged in user or `Optional.empty()` if no-one is currently logged in.
`boolean`	`matches(Password.UnencryptedPassword candidate, Password.EncryptedPassword existing)`	Returns whether the given candidate `Password` matches the given existing one.

- Method Detail
  - getCurrentUser
```
Optional<UserAccount> getCurrentUser()
```
    Returns the UserAccount of the currently logged in user or Optional.empty() if no-one is currently logged in.
    
    Returns:
  - matches
```
boolean matches(Password.UnencryptedPassword candidate,
                Password.EncryptedPassword existing)
```
    Returns whether the given candidate Password matches the given existing one.
    
    Parameters:
    
    candidate - can be null.
    
    existing - must not be null.
    
    Returns: