def extract_full_text(filename, uri)
        return unless Hyrax.config.extract_full_text?
        Hydra::Derivatives::FullTextExtract.create(filename,
                                                   outputs: [{ url: uri, container: "extracted_text" }])
      end
def extract_full_text(filename, uri)
        return unless Hyrax.config.extract_full_text?
        Hydra::Derivatives::FullTextExtract.create(filename,
                                                   outputs: [{ url: uri, container: "extracted_text" }])
      end
Calls the Hydra::Derivates::FulltextExtraction unless the extract_full_text
 configuration option is set to false
 @param [String] filename of the object to be used for full text extraction
 @param [String] uri to the file set (deligated to file_set)