/// <summary>
 /// Compares the current instance with another object of the same type and returns an integer that indicates whether the current instance precedes, follows, or occurs in the same position in the sort order as the other object.
 /// </summary>
 /// <param name="quantity">A quantity to compare with this instance.</param>
 /// <returns>
 /// A value that indicates the relative order of the objects being compared. The return value has these meanings: Value Meaning Less than zero This instance precedes <paramref name="quantity" /> in the sort order. Zero This instance occurs in the same position in the sort order as <paramref name="quantity" />. Greater than zero This instance follows <paramref name="quantity" /> in the sort order.
 /// </returns>
 public int CompareTo(Quantity quantity)
 {
     return QuantityHelper.CompareTo(this, quantity);
 }
 /// <summary>
 /// Determines whether the specified <see cref="Acceleration" />, is equal to this instance.
 /// </summary>
 /// <param name="quantity">The quantity.</param>
 /// <returns>
 ///   <c>true</c> if the specified <see cref="Acceleration" /> is equal to this instance; otherwise, <c>false</c>.
 /// </returns>
 public bool Equals(Quantity quantity)
 {
     return QuantityHelper.AreEqual(this, quantity);
 }