code: def default(cls, package):
          
          core_properties_part = cls._new(package)
          core_properties = core_properties_part.core_properties
          core_properties.title = 'Word Document'
          core_properties.last_modified_by = 'python-docx'
          core_properties.revision = 1
          core_properties.modified = datetime.utcnow()
          return core_properties_part
docs: Return a new |CorePropertiesPart| object initialized with default
          values for its base properties.