In V2 the preferred paradigm was to write a Factory Bean for every object for which you had a parser. In V3, although Although it does not case any problems to have a FactoryBean, it is not usually required.
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The problem revolves around property replacement. In V3, we We use Spring for property replacement and this happens between the parser being called and the bean being created. If the parameter which the parsers has gathered has been converted in the parser, then the property replacement cannot happen.
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