code: public void setStackIds(java.util.Collection<String> stackIds) {
          if (stackIds == null) {
              this.stackIds = null;
              return;
          }
  
          this.stackIds = new com.amazonaws.internal.SdkInternalList<String>(stackIds);
      }
docs: <p>
  An array of stack IDs that specify the stacks to be described. If you omit this parameter,
  <code>DescribeStacks</code> returns a description of every stack.
  </p>
  
  @param stackIds
  An array of stack IDs that specify the stacks to be described. If you omit this parameter,
  <code>DescribeStacks</code> returns a description of every stack.