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String? string; // Nullable String
void main() {
var len = string!.length; // Runtime error: Null check operator used on a null value
}
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// Assuming the user wants to handle the null value error using the null check operator.
// Here's an example of how to handle a null value using the null check operator in Flutter.
// Example code block:
String? nullableString; // Assume this variable is null
void main() {
// Using the null check operator to handle the null value
String nonNullableString = nullableString!;
print(nonNullableString); // Should not throw an error now
}