How to generate JAXBELement(String)

[happyoka]

JAXB/XJC generates String rather than JAXBElement<String>. How to generate JAXBElement<String> ?
<xs:element name="aerodromePrevious" type="xs:string" minOccurs="0" maxOccurs="1" nillable="true" />

xjc { options = ["-extension", "-Xnamespace-prefix", "-Xdefault-value"] xsdDir.set(layout.projectDirectory.dir("schemas/core")) includes = ["Test.xsd"] bindingFiles.setFrom(layout.projectDirectory.dir("binding").asFileTree.matching { include("**/*.xjb") }) }