code: public DescribeVpnConnectionsRequest withVpnConnectionIds(String... vpnConnectionIds) {
          if (this.vpnConnectionIds == null) {
              setVpnConnectionIds(new com.amazonaws.internal.SdkInternalList<String>(vpnConnectionIds.length));
          }
          for (String ele : vpnConnectionIds) {
              this.vpnConnectionIds.add(ele);
          }
          return this;
      }
docs: <p>
  One or more VPN connection IDs.
  </p>
  <p>
  Default: Describes your VPN connections.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setVpnConnectionIds(java.util.Collection)} or {@link #withVpnConnectionIds(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param vpnConnectionIds
  One or more VPN connection IDs.</p>
  <p>
  Default: Describes your VPN connections.
  @return Returns a reference to this object so that method calls can be chained together.