public void RemoveFirstOccurrences ()
{
#region RemoveFirstOccurrence
Assert.AreEqual ("bnana",
"banana".RemoveFirstOccurrence ('a').Implode ());
#endregion
#region RemoveFirstOccurrences
Assert.AreEqual ("bnna",
"banana".RemoveFirstOccurrences ('a', 2).Implode ());
#endregion
}