Entry<String, Collection<Integer>> entry = iterator.next();
    assertEquals("foo", entry.getKey());
    assertThat(entry.getValue()).containsExactly(1, 3, 7);
    entry = iterator.next();
    assertEquals("google", entry.getKey());
    assertThat(entry.getValue()).containsExactly(2, 6);
    entry = iterator.next();
    assertEquals("tree", entry.getKey());

        }

        return false
      }

      override fun next(): String {
        if (!hasNext()) throw NoSuchElementException()
        val result = nextUrl!!
        nextUrl = null
        canRemove = true
        return result
      }

      override fun remove() {
        check(canRemove) { "remove() before next()" }
        delegate.remove()
      }
    }
  }

I'll show you some concrete examples in the next chapters.

---

Then the next concepts to consider are all about the program running your actual API (e.g. Uvicorn).

## Program and Process { #program-and-process }

        nextOutFrame = outFramesIterator.next()
      }

      if (nextOutFrame != null && nextOutFrame.sequence == i) {
        val start = nextOutFrame.start
        var truncated: Boolean
        var end: Long
        if (outFramesIterator.hasNext()) {
          nextOutFrame = outFramesIterator.next()
          end = nextOutFrame.start
          truncated = false
        } else {

        int bytesWritten = context.encode(buffer, 0);

        assertEquals(context.size(), bytesWritten);

        // Verify context header
        assertEquals(0, SMBUtil.readInt4(buffer, 0)); // Next
        assertEquals(16, SMBUtil.readInt2(buffer, 4)); // NameOffset
        assertEquals(4, SMBUtil.readInt2(buffer, 6)); // NameLength
        assertEquals(0, SMBUtil.readInt2(buffer, 8)); // Reserved

  }

  private Entry<K, V> getEntryNullReplaces() {
    Iterator<Entry<K, V>> entries = getSampleElements().iterator();
    for (int i = 0; i < getNullLocation(); i++) {
      entries.next();
    }
    return entries.next();
  }

  protected void initMultimapWithNullKey() {
    resetContainer(getSubjectGenerator().create((Object[]) createArrayWithNullKey()));
  }

        return doMove(form, -1);
    }

    /**
     * Navigates to the next page of search results.
     *
     * @param form the list form containing current search criteria
     * @return HTML response with next page results
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse next(final ListForm form) {
        saveToken();
        return doMove(form, 1);
    }

  // TODO: Test interrupts with both interruptible and uninterruptible monitor.
  // TODO: Test multiple waiters: If guard is still satisfied, signal next waiter.
  // TODO: Test multiple waiters: If guard is no longer satisfied, do not signal next waiter.

        assertEquals(unicodeName, notifications.get(0).getFileName());
    }

    @Test
    @DisplayName("Should handle malformed next entry offset")
    void testMalformedNextEntryOffset() throws Exception {
        // Given - notification with invalid next entry offset
        byte[] buffer = new byte[512];
        int offset = 0;

        setHeaderStart(response, 64);

        // Write structure

    void setRequestCredits(int credits);

    /**
     * Checks if this is a cancel request.
     *
     * @return whether this is a cancel request
     */
    boolean isCancel();

    /**
     * Gets the next request in the chain.
     *
     * @return chained request
     */
    Request getNext();

    /**
     * Gets the response for this request.
     *
     * @return the response for this request
     */