Currently, there is no documentation for "enableFetchProcessDefinitionDescription" process engine configuration in the manual. As an end user, it would be helpful to know the definition of "enableFetchProcessDefinitionDescription" flag, which can be set as part of process engine configuration.
More details: Users could disable the fetching of process definition description by setting the process engine configuration "enableFetchProcessDefinitionDescription" to false. By disabling the flag, the Bpmn Model Instance is not fetched and cached anymore whenever a process definition query is performed and thus the returned process definition does not contain the description.
We might think of adding it at following location.