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Finally, M. Caruana Galizia alerted us to the need to use maven-shade's ServicesResourceTransformer because the third-party dependencies' services file will be overwritten unless you transform the services. See an example: here.

OCR

Note: the configuration of some of these features via the config file requires a nightly build of Tika after 11/8/2016 or Tika version >= 1.15.

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