The method _____ should be defined to return the error message for a custom error.
- ErrorMessage
- Message
- GetError
- ErrorText
The method that should be defined to return the error message for a custom error is Error() string. When implementing the error interface in Go, you must define the Error() method, which returns a string representing the error message. This method is called whenever an error is converted to a string, allowing you to customize the error message for your custom error type.
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