/usr/ is in php-symfony-serializer 2.7.10-0ubuntu2.
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/usr/share/doc/
/usr/share/
/usr/share/php/
/usr/share/php/Symfony/
/usr/share/php/Symfony/Component/
/usr/share/php/Symfony/Component/Serializer/
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/usr/share/php/Symfony/Component/Serializer/Mapping/AttributeMetadataInterface.php
/usr/share/php/Symfony/Component/Serializer/Mapping/ClassMetadata.php
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/usr/share/php/Symfony/Component/Serializer/Encoder/
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/usr/share/php/Symfony/Component/Serializer/Encoder/ChainDecoder.php
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/usr/share/php/Symfony/Component/Serializer/Normalizer/
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/usr/share/doc/php-symfony-serializer/copyright
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/usr/share/doc/php-symfony-serializer/README.Debian