assertThrows(NullPointerException.class, () -> j.join(mapWithNulls));

    assertEquals("a:00;00:b", j.useForNull("00").join(mapWithNulls));

    StringBuilder sb = new StringBuilder();
    j.appendTo(sb, ImmutableMap.of(1, 2, 3, 4, 5, 6));
    assertEquals("1:2;3:4;5:6", sb.toString());
  }

  public void testEntries() {
    MapJoiner j = Joiner.on(";").withKeyValueSeparator(":");

        Pattern pattern,
        UnsignedInteger ui,
        UnsignedLong ul,
        StringBuilder sb,
        Predicate<?> pred,
        Function<?, ?> func,
        Object obj) {
      delegate.foo(
          s, r, n, it, b, eq, e, in, c, ord, charset, unit, cls, joiner, pattern, ui, ul, sb, pred,
          func, obj);
    }

    @Override
    public String toString() {

	RET R30					   // c0035fd6
	RET	foo(SB)

// B/BL/B.cond cases, and canonical names JMP, CALL.
	BL	1(PC)      // CALL 1(PC)
	BL	(R2)       // CALL (R2)
	BL	foo(SB)    // CALL foo(SB)
	BL	bar<>(SB)  // CALL bar<>(SB)
	B	foo(SB)    // JMP foo(SB)
	BEQ	1(PC)
	BEQ	2(PC)
	TBZ	$1, R1, 2(PC)
	TBNZ	$2, R2, 2(PC)
	JMP	foo(SB)
	CALL	foo(SB)

// ADR
	ADR	next, R11     // ADR R11 // 2b000010

      StringBuilder sb = new StringBuilder();
      for (int j = 0; j < charCount; j++) {
        int codePoint;
        // discard illegal surrogate "codepoints"
        do {
          codePoint = rnd.nextInt(maxCodePoint.value);
        } while (Character.isSurrogate((char) codePoint));
        sb.appendCodePoint(codePoint);
      }
      strings[i] = sb.toString();
    }
  }

  @Benchmark

      StringBuilder sb = new StringBuilder();
      for (int j = 0; j < charCount; j++) {
        int codePoint;
        // discard illegal surrogate "codepoints"
        do {
          codePoint = rnd.nextInt(maxCodePoint.value);
        } while (Character.isSurrogate((char) codePoint));
        sb.appendCodePoint(codePoint);
      }
      strings[i] = sb.toString();
    }
  }

  @Benchmark

            final List<String> rules = Analysis.parseWordList(env, settings, "synonyms", s -> s);
            final StringBuilder sb = new StringBuilder();
            for (final String line : rules) {
                sb.append(line).append(System.getProperty("line.separator"));
            }
            reader = new StringReader(sb.toString());
        } else if (settings.get("synonyms_path") != null) {

        final StringBuilder sb = new StringBuilder();
        try (BufferedReader br = new BufferedReader(new InputStreamReader(
                this.getClass().getClassLoader().getResourceAsStream("suggest_indices/suggest_settings_array.json")));) {

            String line;
            while ((line = br.readLine()) != null) {
                sb.append(line);
            }
        }

        valueLines = new ArrayList<>(valueLines);
        String escapedKey = escapeKey(key);
        StringBuilder sb = new StringBuilder();
        // int lastLine = valueLines.size() - 1;
        if (valueLines.isEmpty()) {
            valueLines.add(escapedKey + "=");
            sb.append(escapedKey).append("=");
        } else {
            String val0 = valueLines.get(0);

	sb.WriteString("(")
	for i := range params {
		if i > 0 {
			sb.WriteString(", ")
		}
		fmt.Fprintf(&sb, "_cgo%d", i)
	}
	sb.WriteString("); ")
	if call.Deferred {
		sb.WriteString("}")
	}
	sb.WriteString("}")
	if call.Deferred {
		sb.WriteString("()")
	}
	sb.WriteString("()")

	return sb.String(), needsUnsafe
}

            return true;
        }

        @Override
        public String toString() {
            final StringBuilder sb = new StringBuilder();
            sb.append(word).append(',').append(startOffset).append(',').append(endOffset).append(',').append(posInc);
            return sb.toString();
        }

        @Override
        public boolean equals(final Object other) {