/// <summary>
/// Creates a sentinel value to indicate an increment by the given value.
/// </summary>
/// <remarks>
/// <para>
/// If the current value is an integer or a double, both the current and the given value will be
/// interpreted as doubles and all arithmetic will follow IEEE 754 semantics.Otherwise, the
/// transformation will set the field to the given value.
/// </para>
/// </remarks>
/// <param name="amount">The amount to increment the field by.</param>
/// <returns>A sentinel value representing a field increment.</returns>
public static object Increment(double amount) =>
SentinelValue.ForIncrement(new Value {
DoubleValue = amount
});
/// <summary>
/// Creates a sentinel value to indicate an increment by the given value.
/// </summary>
/// <remarks>
/// <para>
/// If the current field value is an integer, possible integer overflows are resolved to
/// <see cref="long.MaxValue"/> or <see cref="long.MinValue"/>. If the current field value
/// is a double, both values will be interpreted as doubles and the arithmetic will follow IEEE 754 semantics.
/// </para>
/// <para>
/// If the current field is not an integer or double, or if the field does not yet exist, the
/// transformation will set the field to the given value.
/// </para>
/// </remarks>
/// <param name="amount">The amount to increment the field by.</param>
/// <returns>A sentinel value representing a field increment.</returns>
public static object Increment(long amount) =>
SentinelValue.ForIncrement(new Value {
IntegerValue = amount
});