code: def _get_regions_element(
      self, selected: List[str]
  ) -> ConfigMultiElement:
      element = ConfigMultiElement(selected=selected)
      for r in REGIONS:
          element.values.append(ConfigElementValue(value=r, label=r))
      return element
  
file_path: dstack/src/dstack/_internal/server/services/backends/configurators/datacrunch.py
imports: import json
  from typing import List
  from dstack._internal.core.backends.datacrunch import DataCrunchBackend
  from dstack._internal.core.backends.datacrunch.config import DataCrunchConfig
  from dstack._internal.core.models.backends.base import BackendType, ConfigElementValue, ConfigMultiElement
  from dstack._internal.core.models.backends.datacrunch import AnyDataCrunchConfigInfo, DataCrunchConfigInfo, DataCrunchConfigInfoWithCreds, DataCrunchConfigInfoWithCredsPartial, DataCrunchConfigValues, DataCrunchCreds, DataCrunchStoredConfig
  from dstack._internal.server.models import BackendModel, ProjectModel
  from dstack._internal.server.services.backends.configurators.base import Configurator
label_desc: Use image node_id 7 for calling the DataCrunchConfigurator obj's underlying member method code with example usage: obj._get_regions_element(selected) and returns: element