class type user_target = object .. end
Targets are the nodes in the workflow arborescence (see also
Ketrew_target.t).
method name : string
Get the name of the target
method metadata : [ `String of string ] option
The metadata that has been set for the target (work-in-progress).
method product : user_artifact
The user-artifact produced by the target, if known (raises exception if
unknown).