Immutable details for creating a workflow instance.

Class Variable	defn	Undocumented
Class Variable	disable_eager_activity_execution	Undocumented
Class Variable	extern_functions	Undocumented
Class Variable	failure_converter_class	Undocumented
Class Variable	info	Undocumented
Class Variable	interceptor_classes	Undocumented
Class Variable	last_completion_result	Undocumented
Class Variable	last_failure	Undocumented
Class Variable	payload_converter_class	Undocumented
Class Variable	randomness_seed	Undocumented
Class Variable	worker_level_failure_exception_types	Undocumented