code: public DescribeStaleSecurityGroupsResult withStaleSecurityGroupSet(StaleSecurityGroup... staleSecurityGroupSet) {
          if (this.staleSecurityGroupSet == null) {
              setStaleSecurityGroupSet(new com.amazonaws.internal.SdkInternalList<StaleSecurityGroup>(staleSecurityGroupSet.length));
          }
          for (StaleSecurityGroup ele : staleSecurityGroupSet) {
              this.staleSecurityGroupSet.add(ele);
          }
          return this;
      }
docs: <p>
  Information about the stale security groups.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setStaleSecurityGroupSet(java.util.Collection)} or
  {@link #withStaleSecurityGroupSet(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param staleSecurityGroupSet
  Information about the stale security groups.
  @return Returns a reference to this object so that method calls can be chained together.