lastLine = line;
            if (line.startsWith(HEADING_PREFIX)) {
                line = line.substring(HEADING_PREFIX.length());
                heading = line + " > ";
            } else {
                line = heading + line;
            }
        } else if (inProgressReport) {
            inProgressReport = false;
            line = lastLine + line;
        } else {
            return null;

import jcifs.internal.smb2.ioctl.Smb2IoctlRequest;
import jcifs.internal.smb2.ioctl.Smb2IoctlResponse;
import jcifs.internal.smb2.ioctl.SrvPipePeekResponse;

/**
 * Input stream for reading from SMB named pipes.
 *
 * This class provides a stream-based interface for reading
 * data from SMB named pipes over the network.
 *
 * @author mbechler
 */
public class SmbPipeInputStream extends SmbFileInputStream {

  /** Read a single line counted against the header size limit. */
  fun readLine(): String {
    val line = source.readUtf8LineStrict(headerLimit)
    headerLimit -= line.length.toLong()
    return line
  }

  /** Reads headers or trailers. */
  fun readHeaders(): Headers {
    val result = Headers.Builder()
    while (true) {
      val line = readLine()
      if (line.isEmpty()) break
      result.addLenient(line)
    }

And in many cases, reading them would be a blocking operation (that could block the event loop), because they are read from disk or from the network.

/// info

The example above is actually an exception, because the `io.BytesIO` object is already in memory, so reading it won't block anything.

But in many cases reading a file or a file-like object would block.

///

    @Test
    public void test_render_heading1() {
        String result = markdownRenderer.render("# Heading 1");
        assertTrue(result.contains("<h1>Heading 1</h1>"));
    }

    @Test
    public void test_render_heading2() {
        String result = markdownRenderer.render("## Heading 2");
        assertTrue(result.contains("<h2>Heading 2</h2>"));
    }

    @Test
    public void test_render_heading3() {

		{"!\"#$%&'()*+,-.／:;<=>?@[\\]^_`{|}~", true},
		{"␀␁␂␃␄␅␆␇␈␉␊␋␌␍␎␏␐␑␒␓␔␕␖␗␘␙␚␛␜␝␞␟␡", true},
		{"trailing VT␋/trailing VT␋", true},
		{"␋leading VT/␋leading VT", true},
		{"~leading tilde", true},
		{"\rleading CR", true},
		{"\nleading LF", true},
		{"\tleading HT", true},
		{"trailing CR\r", true},
		{"trailing LF\n", true},
		{"trailing HT\t", true},

                                    <tr>
                                        <th><la:message key="labels.dict_kuromoji_reading"/></th>
                                        <td>${f:h(reading)}<la:hidden property="reading"/></td>
                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.dict_kuromoji_pos"/></th>

        // After a full read both flags should be set and hasMore should be false
        assertTrue(d.getParametersDone(), "parametersDone should be true after reading");
        assertTrue(d.getDataDone(), "dataDone should be true after reading");
        assertFalse(d.getHasMore(), "hasMore should be false when both packets are fully read");
    }

    /**

Consider an application streaming a video over http/2. Perhaps the user pauses the video and the application stops reading bytes from this stream. The buffer will fill up, and flow control prevents the server from sending more data on this stream. When the user unpauses her video the buffer drains, the read is acknowledged, and the server proceeds to stream data.

        return "ElevateWord [labelTypeIds=" + Arrays.toString(labelTypeIds) + ", labelTypeList=" + labelTypeList + ", boost=" + boost
                + ", createdBy=" + createdBy + ", createdTime=" + createdTime + ", reading=" + reading + ", suggestWord=" + suggestWord
                + ", updatedBy=" + updatedBy + ", updatedTime=" + updatedTime + ", docMeta=" + docMeta + "]";
    }