public function toXMLString()
 {
     $str = '';
     if ($this->BuyerPhone != null) {
         $str .= '<ebl:BuyerPhone>';
         $str .= $this->BuyerPhone->toXMLString();
         $str .= '</ebl:BuyerPhone>';
     }
     if ($this->ItemAmount != null) {
         $str .= '<ebl:ItemAmount';
         $str .= $this->ItemAmount->toXMLString();
         $str .= '</ebl:ItemAmount>';
     }
     if ($this->Tax != null) {
         $str .= '<ebl:Tax';
         $str .= $this->Tax->toXMLString();
         $str .= '</ebl:Tax>';
     }
     if ($this->Shipping != null) {
         $str .= '<ebl:Shipping';
         $str .= $this->Shipping->toXMLString();
         $str .= '</ebl:Shipping>';
     }
     if ($this->ItemName != null) {
         $str .= '<ebl:ItemName>' . PPUtils::escapeInvalidXmlCharsRegex($this->ItemName) . '</ebl:ItemName>';
     }
     if ($this->ItemNumber != null) {
         $str .= '<ebl:ItemNumber>' . PPUtils::escapeInvalidXmlCharsRegex($this->ItemNumber) . '</ebl:ItemNumber>';
     }
     if ($this->Custom != null) {
         $str .= '<ebl:Custom>' . PPUtils::escapeInvalidXmlCharsRegex($this->Custom) . '</ebl:Custom>';
     }
     if ($this->InvoiceID != null) {
         $str .= '<ebl:InvoiceID>' . PPUtils::escapeInvalidXmlCharsRegex($this->InvoiceID) . '</ebl:InvoiceID>';
     }
     if ($this->ReturnURL != null) {
         $str .= '<ebl:ReturnURL>' . PPUtils::escapeInvalidXmlCharsRegex($this->ReturnURL) . '</ebl:ReturnURL>';
     }
     if ($this->CancelURL != null) {
         $str .= '<ebl:CancelURL>' . PPUtils::escapeInvalidXmlCharsRegex($this->CancelURL) . '</ebl:CancelURL>';
     }
     if ($this->AddressDisplayOptions != null) {
         $str .= '<ebl:AddressDisplayOptions>' . PPUtils::escapeInvalidXmlCharsRegex($this->AddressDisplayOptions) . '</ebl:AddressDisplayOptions>';
     }
     if ($this->SharePhone != null) {
         $str .= '<ebl:SharePhone>' . PPUtils::escapeInvalidXmlCharsRegex($this->SharePhone) . '</ebl:SharePhone>';
     }
     if ($this->ShipToAddress != null) {
         $str .= '<ebl:ShipToAddress>';
         $str .= $this->ShipToAddress->toXMLString();
         $str .= '</ebl:ShipToAddress>';
     }
     if ($this->BuyerEmail != null) {
         $str .= '<ebl:BuyerEmail>' . PPUtils::escapeInvalidXmlCharsRegex($this->BuyerEmail) . '</ebl:BuyerEmail>';
     }
     return $str;
 }
 public function toXMLString()
 {
     $str = '';
     if ($this->BuyerPhone != null) {
         //prop is not a collection
         //prop is complex
         //prop is not enum
         //does not contain attribute or is attribute
         $str .= '<ebl:BuyerPhone>';
         $str .= $this->BuyerPhone->toXMLString();
         $str .= '</ebl:BuyerPhone>';
     }
     if ($this->ItemAmount != null) {
         //prop is not a collection
         //prop is complex
         //prop is not enum
         //prop containsattribute
         $str .= '<ebl:ItemAmount';
         $str .= $this->ItemAmount->toXMLString();
         $str .= '</ebl:ItemAmount>';
     }
     if ($this->Tax != null) {
         //prop is not a collection
         //prop is complex
         //prop is not enum
         //prop containsattribute
         $str .= '<ebl:Tax';
         $str .= $this->Tax->toXMLString();
         $str .= '</ebl:Tax>';
     }
     if ($this->Shipping != null) {
         //prop is not a collection
         //prop is complex
         //prop is not enum
         //prop containsattribute
         $str .= '<ebl:Shipping';
         $str .= $this->Shipping->toXMLString();
         $str .= '</ebl:Shipping>';
     }
     if ($this->ItemName != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:ItemName>' . $this->ItemName . '</ebl:ItemName>';
     }
     if ($this->ItemNumber != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:ItemNumber>' . $this->ItemNumber . '</ebl:ItemNumber>';
     }
     if ($this->Custom != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:Custom>' . $this->Custom . '</ebl:Custom>';
     }
     if ($this->InvoiceID != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:InvoiceID>' . $this->InvoiceID . '</ebl:InvoiceID>';
     }
     if ($this->ReturnURL != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:ReturnURL>' . $this->ReturnURL . '</ebl:ReturnURL>';
     }
     if ($this->CancelURL != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:CancelURL>' . $this->CancelURL . '</ebl:CancelURL>';
     }
     if ($this->AddressDisplayOptions != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:AddressDisplayOptions>' . $this->AddressDisplayOptions . '</ebl:AddressDisplayOptions>';
     }
     if ($this->SharePhone != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:SharePhone>' . $this->SharePhone . '</ebl:SharePhone>';
     }
     if ($this->ShipToAddress != null) {
         //prop is not a collection
         //prop is complex
         //prop is not enum
         //does not contain attribute or is attribute
         $str .= '<ebl:ShipToAddress>';
         $str .= $this->ShipToAddress->toXMLString();
         $str .= '</ebl:ShipToAddress>';
     }
     if ($this->BuyerEmail != null) {
         //prop is not a collection
         //prop not complex
         //prop is not value
         $str .= '<ebl:BuyerEmail>' . $this->BuyerEmail . '</ebl:BuyerEmail>';
     }
     return $str;
 }