<?php

namespace StructType;

use \WsdlToPhp\PackageBase\AbstractStructBase;

/**
 * This class stands for TravelerIDRef StructType
 * Meta information extracted from the WSDL
 * - documentation: Unique association ID reference of the traveler associated to this item. No comma separated lists and no ranges allowed. Example: T1
 * @subpackage Structs
 */
class TravelerIDRef extends AbstractStructBase
{
    /**
     * The _
     * @var string
     */
    public $_;
    /**
     * Constructor method for TravelerIDRef
     * @uses TravelerIDRef::set_()
     * @param string $_
     */
    public function __construct($_ = null)
    {
        $this
            ->set_($_);
    }
    /**
     * Get _ value
     * @return string|null
     */
    public function get_()
    {
        return $this->_;
    }
    /**
     * Set _ value
     * @param string $_
     * @return \StructType\TravelerIDRef
     */
    public function set_($_ = null)
    {
        // validation for constraint: string
        if (!is_null($_) && !is_string($_)) {
            throw new \InvalidArgumentException(sprintf('Invalid value %s, please provide a string, %s given', var_export($_, true), gettype($_)), __LINE__);
        }
        $this->_ = $_;
        return $this;
    }
}
