EnterpriseCustomField xml export

[Vastyjoy]

Can EnterpriseCustomField be exported to xml?
If so, what is the correct way to do it?

I use it somehow
addedTask.setEnterpriseCustomField (
properties.customFieldIndex,
objectMapper.writeValueAsString (customFields) .toByteArray ()
)

At the moment of work, the field is there, but it is not exported to xml
val writer = MSPDIWriter ()
writer.write (export.result, tempFile)