'This method enables to modify the fields and its
content before data is inserted into DB.
It uses the fields_need_translation dict with structure:
\'field_name_in_object\': \'field_name_in_db\'
:param fields: dict of fields from NeutronDbObject
:return: modified dict of fields'

@classmethod
def modify_fields_to_db(cls, fields):

    result = copy.deepcopy(dict(fields))
    for (field, field_db) in cls.fields_need_translation.items():
        if (field in result):
            result[field_db] = result.pop(field)
    return result
