private void sendInputStreamToStdIn(final InputStream inputStream, final Process process) {
        multiThreadedStreamCopy(inputStream, process.getOutputStream());
    }
Sends the contents of the given input stream to the
standard input of the given process. Potential exceptions are
ignored.
<p>
Note that the given input stream is <em>not</em> closed by this method.

@param process     the process
@param inputStream the input stream to send to standard input of the process
tika-core/src/main/java/org/apache/tika/embedder/ExternalEmbedder.java