/// <summary>
/// Specifies that the parameter is optional.
/// </summary>
/// <param name="prev">A predecessor object.</param>
/// <param name="defaultValue">Is a default value assigned to the parameter in case that a parameter argument is not passed. All optional parameters have to be declared at the end of the parameter declaration.</param>
public static ParamOptionalChainer Optional(this IParamOptional prev, ParameterArgument defaultValue)
{
return(new ParamOptionalChainer((Chainer)prev, defaultValue));
}
/// <summary>
/// Specifies that the parameter is optional.
/// </summary>
/// <param name="prev">A predecessor object.</param>
public static ParamOptionalChainer Optional(this IParamOptional prev)
{
return(new ParamOptionalChainer((Chainer)prev, null));
}