isNotInExp method
An expression that evaluates to true if this expression does not resolve
to any value that the expressions resolve to.
For an "is not in" comparison with values, use isNotIn.
Implementation
Expression<bool> isNotInExp(List<Expression<D>> expressions) {
if (expressions.isEmpty) {
return Constant(true);
}
return _InExpression(this, expressions, true);
}