| 1 | <?php |
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| 19 | class KeyFile implements JWKSourceInterface |
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| 20 | { |
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| 21 | /** |
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| 22 | * {@inheritdoc} |
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| 23 | */ |
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| 24 | public function create(ContainerBuilder $container, $id, array $config) |
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| 39 | |||
| 40 | /** |
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| 41 | * {@inheritdoc} |
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| 42 | */ |
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| 43 | public function getKey() |
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| 47 | |||
| 48 | /** |
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| 49 | * {@inheritdoc} |
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| 50 | */ |
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| 51 | public function addConfiguration(NodeDefinition $node) |
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| 64 | } |
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| 65 |
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the parent class: