AL1213: Use null-or-whitespace guard helper

Property	Value
Severity	Warning
Category	`Roslyn Utilities`
Code fix	No
Analyzer	`Al1213UseGuardNotNullOrWhiteSpaceAnalyzer`
Enabled by default	Yes

Description

Use Guard.NotNullOrWhiteSpace() instead of verbose if (string.IsNullOrWhiteSpace(...)) throw new ArgumentNullException/ArgumentException patterns.