I try the following test code on http://job-dsl.herokuapp.com/
```
organizationFolder('test')

```
it works the generated xml is correct.

On my container i debug with cat the char is correct in the jenkins.yaml
file /jenkins.yaml
/jenkins.yaml: UTF-8 Unicode text

cat jenkins.yaml | grep displayName
```
displayName('Foxy (🦊)')
```
the generated config.xml from the job the char is broken
```
cat /var/jenkins_home/jobs/test/config.xml | grep display
<displayName>Foxy (力)</displayName>
```

when i set the displayName manual over the gui it works and also the char in the config.xml is correct.