MGR.Guard expression-based API

The expression-based API takes an expression to specify the value and the name of the parameter.

The expression can be any combinaison of:

• a ConstantExpression (ie () => 1),
• a MemberExpression (ie () => value, () => value.Property),
• a BinaryExpression that represents an array index access (ie () => value[0])

If any part of an expression is null (except the complete expression), a System.NullReferenceException will be thrown be the expression parser.