EFS.MountTargetsee http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-efs-mounttarget.html
type properties = {security_groups : string list;file_system_id : string;ip_address : string option;subnet_id : string;}see http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-efs-mounttarget.html;
val make_properties :
security_groups:string list ->
file_system_id:string ->
?ip_address:string ->
subnet_id:string ->
unit ->
propertiesval yojson_of_properties :
properties ->
[> `Assoc of (string * Yojson.Safe.t) list ]val create_attributes : string -> attributes