file
Connection settings for an Amazon EFS file system. To connect a function to a file system, a mount target must be available in every Availability Zone that your function connects to. If your template contains an AWS::EFS::MountTarget resource, you must also specify a `DependsOn` attribute to ensure that the mount target is created or updated before the function. For more information about using the `DependsOn` attribute, see DependsOn Attribute.