If we define an extension point pointing to a configuration file into the plugin, it could be great to have an error if the file doesn't exists because we want to have the override by the configuration file.

Example:

            <extension id="org.ametys.plugins.cms.upgrade"
                point="org.ametys.core.migration.MigrationExtensionPoint"
                config="migration/org.ametys.plugins.web.upgrade.xml">
            </extension>

The file migration/org.ametys.plugins.web.upgrade.xml doesn't exist but the problem is silently ignored.