code: public GetAttributeValuesResult withAttributeValues(AttributeValue... attributeValues) {
          if (this.attributeValues == null) {
              setAttributeValues(new java.util.ArrayList<AttributeValue>(attributeValues.length));
          }
          for (AttributeValue ele : attributeValues) {
              this.attributeValues.add(ele);
          }
          return this;
      }
docs: <p>
  The list of values for an attribute. For example, <code>Throughput Optimized HDD</code> and
  <code>Provisioned IOPS</code> are two available values for the <code>AmazonEC2</code> <code>volumeType</code>.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setAttributeValues(java.util.Collection)} or {@link #withAttributeValues(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param attributeValues
  The list of values for an attribute. For example, <code>Throughput Optimized HDD</code> and
  <code>Provisioned IOPS</code> are two available values for the <code>AmazonEC2</code>
  <code>volumeType</code>.
  @return Returns a reference to this object so that method calls can be chained together.