A singleton can not add a init-method via ejb-jar.xml descriptor because it fail with Parser Exception

If a Singelton EJB should be created without annotation and use ejb-jar.xml to declare it this will work for mostly all but not for init-method element.

The class is a POJO without annotations, the ejb-jar.xml looks like followed
------
<ejb-jar xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_2.xsd" version="3.2">
<enterprise-beans>
<session>
<ejb-name>StartupSingletonBean</ejb-name>
<display-name>JBossInit</display-name>
<description>JBoss startup class</description>
<ejb-class>org.jboss.wfink.ejb31.singleton.StartupSingletonBean</ejb-class>
<session-type>Singleton</session-type>
<init-on-startup>true</init-on-startup>
<init-method>test23</init-method>
— > this is where the Exception row/col point to
<env-entry>
<description>an example for a environment value</description>
<env-entry-name>myString</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>MyString from the ejb-jar.xml </env-entry-value>
</env-entry>
</session>
</enterprise-beans>
.....
--------

The Exception is this:
15:27:29,450 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC000001: Failed to start service jboss.deployment.subunit."simpleEJB31.ear"."ejb.jar".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."simpleEJB31.ear"."ejb.jar".PARSE: WFLYSRV0153: Failed to process phase PARSE of subdeployment "ejb.jar" of deployment "simpleEJB31.ear"
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:183)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1738)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1700)
at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1558)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: WFLYEJB0085: Exception while parsing ejb-jar.xml: /content/simpleEJB31.ear/ejb.jar/META-INF/ejb-jar.xml
at org.jboss.as.ejb3.deployment.processors.EjbJarParsingDeploymentUnitProcessor.parseEjbJarXml(EjbJarParsingDeploymentUnitProcessor.java:275)
at org.jboss.as.ejb3.deployment.processors.EjbJarParsingDeploymentUnitProcessor.deploy(EjbJarParsingDeploymentUnitProcessor.java:126)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:176)
... 8 more
Caused by: com.ctc.wstx.exc.WstxParsingException: Received non-all-whitespace CHARACTERS or CDATA event in nextTag().
at [row,col

]: [18,25]
at com.ctc.wstx.sr.StreamScanner.constructWfcException(StreamScanner.java:621)
at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:491)
at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:475)
at com.ctc.wstx.sr.BasicStreamReader.nextTag(BasicStreamReader.java:1224)
at org.jboss.metadata.ejb.parser.spec.AbstractMetaDataParser.processElements(AbstractMetaDataParser.java:64)
at org.jboss.metadata.ejb.parser.spec.InitMethodMetaDataParser.parse(InitMethodMetaDataParser.java:55)
at org.jboss.metadata.ejb.parser.spec.SessionBean30MetaDataParser.processElement(SessionBean30MetaDataParser.java:104)
at org.jboss.metadata.ejb.parser.spec.SessionBean31MetaDataParser.processElement(SessionBean31MetaDataParser.java:143)
at org.jboss.metadata.ejb.parser.spec.SessionBean32MetaDataParser.processElement(SessionBean32MetaDataParser.java:54)
at org.jboss.metadata.ejb.parser.spec.SessionBean32MetaDataParser.processElement(SessionBean32MetaDataParser.java:36)
at org.jboss.metadata.ejb.parser.spec.AbstractMetaDataParser.processElements(AbstractMetaDataParser.java:65)
at org.jboss.metadata.ejb.parser.spec.SessionBeanMetaDataParser.parse(SessionBeanMetaDataParser.java:81)
at org.jboss.metadata.ejb.parser.spec.EnterpriseBeansMetaDataParser.processElement(EnterpriseBeansMetaDataParser.java:87)
at org.jboss.metadata.ejb.parser.spec.EnterpriseBeansMetaDataParser.processElement(EnterpriseBeansMetaDataParser.java:39)
at org.jboss.metadata.ejb.parser.spec.AbstractMetaDataParser.processElements(AbstractMetaDataParser.java:65)
at org.jboss.metadata.ejb.parser.spec.EnterpriseBeansMetaDataParser.parse(EnterpriseBeansMetaDataParser.java:72)
at org.jboss.metadata.ejb.parser.spec.EnterpriseBeansMetaDataParser.parse(EnterpriseBeansMetaDataParser.java:65)
at org.jboss.metadata.ejb.parser.spec.AbstractEjbJarMetaDataParser.processElement(AbstractEjbJarMetaDataParser.java:98)
at org.jboss.metadata.ejb.parser.spec.AbstractEjbJarMetaDataParser.processElement(AbstractEjbJarMetaDataParser.java:43)
at org.jboss.metadata.ejb.parser.spec.AbstractMetaDataParser.processElements(AbstractMetaDataParser.java:65)
at org.jboss.metadata.ejb.parser.spec.EjbJarMetaDataParser.parseDocument(EjbJarMetaDataParser.java:101)
at org.jboss.metadata.ejb.parser.spec.EjbJarMetaDataParser.parse(EjbJarMetaDataParser.java:51)
at org.jboss.as.ejb3.deployment.processors.EjbJarParsingDeploymentUnitProcessor.parseEjbJarXml(EjbJarParsingDeploymentUnitProcessor.java:272)
... 10 more