/// <summary>
/// Sets the FirstIssueLeadTime property
/// </summary>
/// <param name="firstIssueLeadTime">FirstIssueLeadTime property</param>
/// <returns>this instance</returns>
public ItemAttributes WithFirstIssueLeadTime(StringWithUnits firstIssueLeadTime)
{
this.firstIssueLeadTimeField = firstIssueLeadTime;
return this;
}
