<cms:property name="migrationRequired" class="fr.aws.prodige.search.properties.NeedsMigrationProperty">
                <label i18n="false">Migration nécessaire</label>
                <description i18n="false">Est-ce que ce projet doit faire une migration ?</description>
                <enumeration>
                    <entry><label>Aucune</label><value>0</value></entry>
                    <entry><label>Mineure</label><value>1</value></entry>
                    <entry><label>Majeure</label><value>2</value></entry>
                </enumeration>
            </cms:property>

Caused by: java.lang.Exception: Caught an exception trying to initialize the component application-fr.aws.prodige.search.properties.NeedsMigrationProperty-10
	at org.ametys.runtime.plugin.component.ThreadSafeComponentManager.initialize(ThreadSafeComponentManager.java:236)
	at org.ametys.cms.contenttype.DefaultContentType._lookupProperties(DefaultContentType.java:784)
	... 101 more
Caused by: org.apache.avalon.framework.configuration.ConfigurationException: An error occured while configuring the enumerator of the property required
	at org.ametys.cms.model.properties.AbstractStaticProperty._parseAndSetEnumerator(AbstractStaticProperty.java:168)
	at org.ametys.cms.model.properties.AbstractStaticProperty.configure(AbstractStaticProperty.java:61)
	at org.apache.avalon.framework.container.ContainerUtil.configure(ContainerUtil.java:202)
	at org.ametys.runtime.plugin.component.ThreadSafeComponentManager$ComponentFactory.configureAndStart(ThreadSafeComponentManager.java:401)
	at org.ametys.runtime.plugin.component.ThreadSafeComponentManager$ComponentFactory.newInstance(ThreadSafeComponentManager.java:420)
	at org.ametys.runtime.plugin.component.ThreadSafeComponentManager.initialize(ThreadSafeComponentManager.java:230)
	... 102 more
Caused by: java.lang.NullPointerException: Cannot invoke "org.ametys.cms.data.type.indexing.IndexableElementType.parseConfiguration(org.apache.avalon.framework.configuration.Configuration)" because the return value of "org.ametys.cms.model.properties.AbstractStaticProperty.getType()" is null
	at org.ametys.cms.model.properties.AbstractStaticProperty._parseAndSetEnumerator(AbstractStaticProperty.java:157)
	... 107 more

@Override
    public void configure(Configuration configuration) throws ConfigurationException
    {
        try
        {
            init(ModelItemTypeExtensionPoint.ROLE_CONTENT_PROPERTY);
        }
        catch (Exception e)
        {
            throw new ConfigurationException("Cannot initialize property " + getClass().getName(), e);
        }
        super.configure(configuration);
    }