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