public CopyFieldDTO(CopyField copyField) {
   this.copyFieldId = copyField.getId();
   this.indexFieldSourceModel = new EntityModel<IndexField>(copyField.getIndexFieldSource());
   this.indexFieldDestModel = new EntityModel<IndexField>(copyField.getIndexFieldDest());
   this.maxChars = copyField.getMaxChars();
   this.sourceAllFields = copyField.isSourceAllFields();
 }
 public CopyField toCopyField() {
   CopyField copyField = new CopyField();
   copyField.setId(copyFieldId);
   copyField.setIndexFieldSource(getIndexFieldSource());
   copyField.setIndexFieldDest(getIndexFieldDest());
   copyField.setMaxChars(getMaxChars());
   copyField.setSourceAllFields(isSourceAllFields());
   return copyField;
 }