Refactor ProducerFactory to use constant for repeated exception message #3550
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The error message "This factory does not support this method" was hardcoded twice in the production code of the ProducerFactory interface. By introducing the constant FACTORY_DOES_NOT_SUPPORT_METHOD, we eliminate this duplication, improve code maintainability, and ensure consistency. This change is particularly significant as it affects actual production code, not test code. Moreover, while currently used twice, this constant could potentially be reused in other parts of the codebase in the future, further justifying its creation and enhancing the overall code quality and future maintainability of the ProducerFactory and related classes.