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[Serializer] add note in DiscriminatorMap section #19426

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Jan 17, 2024
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[Serializer] add note in DiscriminatorMap section #19426

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5 changes: 5 additions & 0 deletions components/serializer.rst
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Expand Up @@ -1837,6 +1837,11 @@ and ``BitBucketCodeRepository`` classes:
</class>
</serializer>
.. note::

The values of the array parameter `mapping` should be strings.
Otherwise, it will implicitly be cast into strings.

Once configured, the serializer uses the mapping to pick the correct class::

$serialized = $serializer->serialize(new GitHubCodeRepository(), 'json');
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