/**
  * Information about one or more VPCs.
  *
  * <p><b>NOTE:</b> This method appends the values to the existing list (if any). Use {@link
  * #setVpcs(java.util.Collection)} or {@link #withVpcs(java.util.Collection)} if you want to
  * override the existing values.
  *
  * @param vpcs Information about one or more VPCs.
  * @return Returns a reference to this object so that method calls can be chained together.
  */
 public DescribeVpcsResult withVpcs(Vpc... vpcs) {
   if (this.vpcs == null) {
     setVpcs(new com.amazonaws.internal.SdkInternalList<Vpc>(vpcs.length));
   }
   for (Vpc ele : vpcs) {
     this.vpcs.add(ele);
   }
   return this;
 }
 /**
  * Information about one or more VPCs.
  *
  * @param vpcs Information about one or more VPCs.
  * @return Returns a reference to this object so that method calls can be chained together.
  */
 public DescribeVpcsResult withVpcs(java.util.Collection<Vpc> vpcs) {
   setVpcs(vpcs);
   return this;
 }