code: public AttributeValue withNS(java.util.Collection<String> nS) {
          if (nS == null) {
              this.nS = null;
          } else {
              java.util.List<String> nSCopy = new java.util.ArrayList<String>(nS.size());
              nSCopy.addAll(nS);
              this.nS = nSCopy;
          }
  
          return this;
      }
docs: A set of numbers.
  <p>
  Returns a reference to this object so that method calls can be chained together.
  
  @param nS A set of numbers.
  
  @return A reference to this updated object so that method calls can be chained
  together.