private static void WriteFirstIndexOfExamples()
{
Console.WriteLine("Examples of overloads of method \"WriteFirstIndexOf\".");
CustomString str = CustomString.CreateInstance("Hello world".ToCharArray());
Console.WriteLine($"{nameof(str)} = CreateInstance(\"{str}\")");
Console.WriteLine($"str.FirstIndexOf('w') => {str.FirstIndexOf('w')}");
Console.WriteLine($"str.FirstIndexOf('k') => {str.FirstIndexOf('k')}");
Console.WriteLine($"str.FirstIndexOf('w', 6) => {str.FirstIndexOf('w', 6)}");
Console.WriteLine($"str.FirstIndexOf('w', 8) => {str.FirstIndexOf('w', 8)}");
Console.WriteLine($"str.FirstIndexOf('w', 3, 4) => {str.FirstIndexOf('w', 3, 4)}");
Console.WriteLine($"str.FirstIndexOf('w', 3, 2) => {str.FirstIndexOf('w', 3, 2)}");
CustomString requiredStr1 = CustomString.CreateInstance("Hello".ToCharArray());
CustomString requiredStr2 = CustomString.CreateInstance("hello".ToCharArray());
CustomString requiredStr3 = CustomString.CreateInstance("rl".ToCharArray());
CustomString requiredStr4 = CustomString.CreateInstance("rld".ToCharArray());
Console.WriteLine($"str.FirstIndexOf(\"{requiredStr1}\") => {str.FirstIndexOf(requiredStr1)}");
Console.WriteLine($"str.FirstIndexOf(\"{requiredStr2}\") => {str.FirstIndexOf(requiredStr2)}");
Console.WriteLine($"str.FirstIndexOf(\"{requiredStr3}\") => {str.FirstIndexOf(requiredStr3)}");
Console.WriteLine($"str.FirstIndexOf(\"{requiredStr4}\") => {str.FirstIndexOf(requiredStr4)}");
Console.WriteLine($"str.FirstIndexOf(\"{requiredStr3}\", 0, 9) => {str.FirstIndexOf(requiredStr3, 0, 9)}");
Console.WriteLine($"str.FirstIndexOf(\"{requiredStr3}\", 0, 8) => {str.FirstIndexOf(requiredStr3, 0, 8)}");
WriteSeparatorStringsAndAwaitMessage();
}