@AfterEach
    public void tearDown() throws Exception {
        if (stream != null) {
            stream.close();
        }
    }
Writes a frame header in the given output stream.

@param out the output stream
@param b2  byte 2 of the header
@param b3  byte 3 of the header
@param b4  byte 4 of the header
@throws IOException if an error occurs
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-audiovideo-module/src/test/java/org/apache/tika/parser/mp3/MpegStreamTest.java