code: def build_deposit_schema(self, record):
          
          schema_path = current_jsonschemas.url_to_path(record['$schema'])
          schema_prefix = current_app.config['DEPOSIT_JSONSCHEMAS_PREFIX']
          if schema_path:
              return current_jsonschemas.path_to_url(
                  schema_prefix + schema_path
              )
docs: Convert record schema to a valid deposit schema.
  
          :param record: The record used to build deposit schema.
          :returns: The absolute URL to the schema or `None`.