FlatFileItemWriterBuilder requires a Resource [BATCH-2720]

[spring-projects-issues]

Michael Minella opened BATCH-2720 and commented

If a user wants to create a FlatFileItemWriter that is decorated with the MultiResourceItemWriter, they would not want to set the Resource.  However, the .build() method on the FlatFileItemWriterBuilder requires a resource to be set.

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Affects: 4.0.1

Backported to: 4.3.0.M1, 4.2.1, 4.1.3, 4.0.4