sotFeatureTask depends on sotTask, not sotAbstractTask
sotFeatureTask depends on sotTask, not sotAbstractTask

    ml::vector errorSIN cannot be plugged on
     taskSOUT (which is a sotVectorMultiBound),
    but can be plugged on
     errorSOUT (which is a ml::vector)

stack-of-tasks/sot-core,stack-of-tasks/sot-core,stack-of-tasks/sot-core