# Methods

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| <p><strong>protected static</strong> <a href="methods/static-definemessage"><strong>defineMessage()</strong></a><strong>:</strong> <mark style="color:green;">string</mark><br>The static "<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals">tag</a>" method builds from the given <a href="static-definemessage#...values-any"><code>values</code></a> the error message of a <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String"><code>string</code></a> type on the template.</p> |
| <p><strong>protected static</strong> <a href="methods/static-iserror"><strong>isError()</strong></a><strong>:</strong> value is <mark style="color:green;">CommonError</mark><<mark style="color:green;">Id</mark>><br>Checks whether the <a href="static-iserror#value-any"><code>value</code></a> of any type is a <code>this</code> instance of any or the given <a href="static-iserror#id-id">identification</a>.</p>                                                                                                                                                     |