/// <summary>
 /// This method add the quantity value.
 /// </summary>
 /// <param name="firstQuantity">Unit of quantity.</param>
 /// <param name="secondQuantity">Unit of quantity.</param>
 /// <returns>Addition of quantity.</returns>
 public double AddQuantityUnits(QuantityUnits firstQuantity, QuantityUnits secondQuantity)
 {
     return(firstQuantity.AddQuantity(secondQuantity));
 }
 /// <summary>
 /// This method used for check Units objects same or not.
 /// </summary>
 /// <param name="firstQuantity">Unit of quantity.</param>
 /// <param name="secondQuantity"><see cref="QuantityUnits"/>Unit of quantity.</param>
 /// <returns>Boolean result.</returns>
 public bool EqualtyCheck(QuantityUnits firstQuantity, QuantityUnits secondQuantity)
 {
     return(firstQuantity.Equals(secondQuantity));
 }