def additionalDocu(self):
    doc = ''
    if hasattr(self, 'sample'):
        doc += f'''*Example JSON data:*
```json
{self.sample().dumpJSON(strict=False)}
```

'''
    return doc
def additionalDocu(self):
    doc = 
    if hasattr(self, 'sample'):
        doc += f'*Example JSON data:*
```json
{self.sample().dumpJSON(strict=False)}
```

'
    return doc