public void setStepTarget(java.util.Collection<String> stepTarget) {
        if (stepTarget == null) {
            this.stepTarget = null;
            return;
        }

        this.stepTarget = new java.util.ArrayList<String>(stepTarget);
    }
<p>
The servers on which a step will be run.
</p>

@param stepTarget
       The servers on which a step will be run.
aws-java-sdk-migrationhuborchestrator/src/main/java/com/amazonaws/services/migrationhuborchestrator/model/UpdateWorkflowStepRequest.java