OpenImmo/src/main/java/org/openestate/io/openimmo/converters/OpenImmo_1_2_0.java
@Override
    public void upgradeFromPreviousVersion(OpenImmoDocument doc) {
        doc.setDocumentVersion(OpenImmoVersion.V1_2_0);

        if (doc instanceof OpenImmoTransferDocument) {
            try {
                this.upgradeMieteinnahmenElements(doc.getDocument());
            } catch (Exception ex) {
                LOGGER.error("Can't upgrade <mieteinnahmen_ist> and <mieteinnahmen_soll> elements!");
                LOGGER.error("> " + ex.getLocalizedMessage(), ex);
            }
        }
    }
@Override
    public void upgradeFromPreviousVersion(OpenImmoDocument doc) {
        doc.setDocumentVersion(OpenImmoVersion.V1_2_0);

        if (doc instanceof OpenImmoTransferDocument) {
            try {
                this.upgradeMieteinnahmenElements(doc.getDocument());
            } catch (Exception ex) {
                LOGGER.error("Can't upgrade <mieteinnahmen_ist> and <mieteinnahmen_soll> elements!");
                LOGGER.error("> " + ex.getLocalizedMessage(), ex);
            }
        }
    }
Upgrade an OpenImmo document from version 1.1 to 1.2.0.

@param doc OpenImmo document in version 1.1