public UpdateWorkflowStepRequest withStepTarget(String... stepTarget) {
        if (this.stepTarget == null) {
            setStepTarget(new java.util.ArrayList<String>(stepTarget.length));
        }
        for (String ele : stepTarget) {
            this.stepTarget.add(ele);
        }
        return this;
    }
<p>
The servers on which a step will be run.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setStepTarget(java.util.Collection)} or {@link #withStepTarget(java.util.Collection)} if you want to
override the existing values.
</p>

@param stepTarget
       The servers on which a step will be run.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-migrationhuborchestrator/src/main/java/com/amazonaws/services/migrationhuborchestrator/model/UpdateWorkflowStepRequest.java