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| # toString method |
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| *[<Null safety>](https://dart.dev/null-safety)* |
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| - @override |
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| String toString |
| () |
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| _<span class="feature">override</span>_ |
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| <p>A string representation of this object.</p> |
| <p>Some classes have a default textual representation, |
| often paired with a static <code>parse</code> function (like <code>int.parse</code>). |
| These classes will provide the textual representation as |
| their string representation.</p> |
| <p>Other classes have no meaningful textual representation |
| that a program will care about. |
| Such classes will typically override <code>toString</code> to provide |
| useful information when inspecting the object, |
| mainly for debugging or logging.</p> |
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| ## Implementation |
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| ```dart |
| @override |
| String toString() => 'ModuleStateException: $message'; |
| ``` |
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