Method openBufferedStream

guava/src/com/google/common/io/ByteSource.java:118–123

Opens a new buffered {@link InputStream} for reading from this source. The returned stream is not required to be a {@link BufferedInputStream} in order to allow implementations to simply delegate to {@link #openStream()} when the stream returned by that method does not benefit from additional buffer

()

   * @since 15.0 (in 14.0 with return type {@link BufferedInputStream})
   */
  public InputStream openBufferedStream() throws IOException {
    InputStream in = openStream();
    return (in instanceof BufferedInputStream)
        ? (BufferedInputStream) in
        : new BufferedInputStream(in);
  }

  /**
   * Returns a view of a slice of this byte source that is at most {@code length} bytes long