```
public class AuthenticationModel
extends Object
```
Storage class containing all the information need to authenticate

Constructors
Constructor	Description
`AuthenticationModel(String username, String password)`	instantiates a new instance of the `AuthenticationModel` class with no client Id
`AuthenticationModel(String username, String password, String clientId)`	instantiates a new instance of the `AuthenticationModel` class ensuring that username and password are both non-null and non-empty

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static AuthenticationModel`	`createInstanceOrThrow(String username, String password, String clientId)`
`String`	`getClientId()`	Gets the client id if present; otherwise throws a `NoSuchElementException`
`String`	`getPassword()`	gets the password value
`String`	`getUsername()`	Get the username value
`boolean`	`hasClientId()`	Returns whether this object contains a clientId or not

public AuthenticationModel(String username,
                           String password)

instantiates a new instance of the AuthenticationModel class with no client Id

public AuthenticationModel(String username,
                           String password,
                           String clientId)

instantiates a new instance of the AuthenticationModel class ensuring that username and password are both non-null and non-empty

Class AuthenticationModel