org.jboss.as.controller.AbstractBoottimeAddStepHandler hasn't the same constructors as its super class.
These have been created in Wildfly (commit c75e36a9) but they are missing from EAP.

public AbstractBoottimeAddStepHandler() {
}

public AbstractBoottimeAddStepHandler(Collection<AttributeDefinition> attributes) {
    super(attributes);
}

public AbstractBoottimeAddStepHandler(AttributeDefinition... attributes) {
    super(attributes);
}


They are required for the EAP 5 retro-compatibility extension.