Should return true if the accessor can generally extract the full text content of a document. If this method returns true, the portal will pass a non-null output file reference to AttachToFile() and will expect the file's text content to be written to that file. If it returns false, AttachToFile()'s contentOutputFile argument will be null.
whether the accessor can extract text content
IPTCustomFileAccessor Interface | com.plumtree.server Namespace