************* Developer API ************* The classes and functions documented here will be of use to developers who wish to create their own custom ASDF types and extensions. .. automodapi:: asdf.types .. automodapi:: asdf.extension .. automodapi:: asdf.resource .. automodapi:: asdf.yamlutil .. automodapi:: asdf.util .. automodapi:: asdf.versioning .. automodapi:: asdf.tests.helpers