get_cached_asdf_extension_list¶
- asdf.extension.get_cached_asdf_extension_list(extensions)[source]¶
Get a previously created AsdfExtensionList for the specified extensions, or create and cache one if necessary. Building the type index is expensive, so it helps performance to reuse the index when possible.
- Parameters:
- extensionslist of asdf.extension.AsdfExtension
- Returns:
- asdf.extension.AsdfExtensionList