Summary
        Throws an 
		ArgumentNullException if the argument is null or whitespace.
    - Namespace
 - oehen
.arguard  - Containing Type
 - ArgumentEmtpyGuard
 
Syntax
public static string ThrowIfIsNullOrWhiteSpace(this string argument, string nameOfArgument)
	Examples
How to validate argument `stringArgument`.
var localVar = stringArgument.ThrowIfIsNullOrWhiteSpace(nameof(stringArgument));
    Parameters
| Name | Type | Description | 
|---|---|---|
| argument | string | Argument value. | 
| nameOfArgument | string | Name of the argument. | 
Return Value
| Type | Description | 
|---|---|
| string |