/usr/share/php/ is in php-json-schema 1.6.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/JsonSchema/
/usr/share/php/JsonSchema/Validator.php
/usr/share/php/JsonSchema/Uri/
/usr/share/php/JsonSchema/Uri/UriRetriever.php
/usr/share/php/JsonSchema/Uri/UriResolver.php
/usr/share/php/JsonSchema/Uri/Retrievers/
/usr/share/php/JsonSchema/Uri/Retrievers/UriRetrieverInterface.php
/usr/share/php/JsonSchema/Uri/Retrievers/PredefinedArray.php
/usr/share/php/JsonSchema/Uri/Retrievers/FileGetContents.php
/usr/share/php/JsonSchema/Uri/Retrievers/Curl.php
/usr/share/php/JsonSchema/Uri/Retrievers/AbstractRetriever.php
/usr/share/php/JsonSchema/RefResolver.php
/usr/share/php/JsonSchema/Exception/
/usr/share/php/JsonSchema/Exception/UriResolverException.php
/usr/share/php/JsonSchema/Exception/ResourceNotFoundException.php
/usr/share/php/JsonSchema/Exception/JsonDecodingException.php
/usr/share/php/JsonSchema/Exception/InvalidSourceUriException.php
/usr/share/php/JsonSchema/Exception/InvalidSchemaMediaTypeException.php
/usr/share/php/JsonSchema/Exception/InvalidArgumentException.php
/usr/share/php/JsonSchema/Constraints/
/usr/share/php/JsonSchema/Constraints/UndefinedConstraint.php
/usr/share/php/JsonSchema/Constraints/TypeConstraint.php
/usr/share/php/JsonSchema/Constraints/StringConstraint.php
/usr/share/php/JsonSchema/Constraints/SchemaConstraint.php
/usr/share/php/JsonSchema/Constraints/ObjectConstraint.php
/usr/share/php/JsonSchema/Constraints/NumberConstraint.php
/usr/share/php/JsonSchema/Constraints/FormatConstraint.php
/usr/share/php/JsonSchema/Constraints/Factory.php
/usr/share/php/JsonSchema/Constraints/EnumConstraint.php
/usr/share/php/JsonSchema/Constraints/ConstraintInterface.php
/usr/share/php/JsonSchema/Constraints/Constraint.php
/usr/share/php/JsonSchema/Constraints/CollectionConstraint.php
/usr/share/php/JsonSchema/autoload.php