public void testToStringEmpty() {
    assertEquals("{}", multimap().toString());
  }

  @CollectionSize.Require(ONE)
  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
  public void testToStringSingleton() {
    assertEquals("{" + k0() + "=[" + v0() + "]}", multimap().toString());
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)

  }

  public void testToString() {
    assertThat(entry("foo", 1).toString()).isEqualTo("foo");
    assertThat(entry("bar", 2).toString()).isEqualTo("bar x 2");
  }

  public void testToStringNull() {
    assertThat(entry(NE, 1).toString()).isEqualTo("null");
    assertThat(entry(NE, 2).toString()).isEqualTo("null x 2");
  }

  public void testEquals() {

        return rootCause;
    }

    @Override
    public String toString() {
        if (rootCause != null) {
            final StringWriter sw = new StringWriter();
            final PrintWriter pw = new PrintWriter(sw);
            rootCause.printStackTrace(pw);
            return super.toString() + "\n" + sw;
        }
        return super.toString();
    }

      return sequence.toString();
    }

    @Override
    public String replaceFrom(CharSequence sequence, char replacement) {
      return sequence.toString();
    }

    @Override
    public String replaceFrom(CharSequence sequence, CharSequence replacement) {
      checkNotNull(replacement);
      return sequence.toString();
    }

    @Override

                "{\"geo_distance\":{\"location\":[150.0,34.0],\"distance\":10000.0,\"distance_type\":\"arc\",\"validation_method\":\"STRICT\",\"ignore_unmapped\":false,\"boost\":1.0}}";
        assertEquals(result, geoInfo.toQueryBuilder().toString().replaceAll("[ \n]", ""));
    }

    @Test
    public void test_34_150_10_x() {
        MockletHttpServletRequest request = getMockRequest();
        request.setParameter("geo.location.x.point", "34,150");

        // Test that Method enum toString returns correct values
        assertEquals("GET", Method.GET.toString());
        assertEquals("POST", Method.POST.toString());
        assertEquals("PUT", Method.PUT.toString());
        assertEquals("DELETE", Method.DELETE.toString());
        assertEquals("HEAD", Method.HEAD.toString());
        assertEquals("OPTIONS", Method.OPTIONS.toString());

        String result = facetInfo.toString();
        assertEquals("FacetInfo [field=[field1, field2], query=[query1, query2], size=10, minDocCount=5, sort=count.desc, missing=unknown]",
                result);
    }

    // Test toString method with null fields
    @Test
    public void test_toString_nullFields() {
        String result = facetInfo.toString();

  @Override
  public int compare(Object left, Object right) {
    return left.toString().compareTo(right.toString());
  }

  // preserve singleton-ness, so equals() and hashCode() work correctly
  private Object readResolve() {
    return INSTANCE;
  }

  @Override
  public String toString() {
    return "Ordering.usingToString()";
  }

  private UsingToStringOrdering() {}

    }

    /**
     * Test for the toString method.
     * It should return a string representation of the object.
     */
    @Test
    void testToString() {
        // The actual toString() method uses super.toString(), so we mimic that for the check.
        // A direct string comparison might be brittle, so we check for the class name and brackets.

            } else if (GLOBALPARAMS.equalsIgnoreCase(tagQueue.get(tagQueue.size() - 2))) {
                globalParams.put(GOOD_URLS, textBuf.toString());
            }
        } else if (BAD_URLS.equalsIgnoreCase(qName)) {
            if (labelType != null) {
                labelType.setExcludedPaths(parseFilterPaths(textBuf.toString(), true, true));