ms.add("b");
    ms.add(null);
    ms.add("a");
    ms.add("b");
    ms.add(null, 2);

    assertThat(ms).containsExactly(null, null, null, "a", "b", "b").inOrder();
    assertEquals(3, ms.count(null));

    SortedSet<@Nullable String> elementSet = ms.elementSet();
    assertEquals(null, elementSet.first());
    assertEquals("b", elementSet.last());

      uses: actions/checkout@v2
      with:
        # We must fetch at least the immediate parents so that if this is
        # a pull request then we can checkout the head.
        fetch-depth: 2

    # If this run was triggered by a pull request event, then checkout
    # the head of the pull request instead of the merge commit.
    - run: git checkout HEAD^2
      if: ${{ github.event_name == 'pull_request' }}

     * .
     */
    @Test
    public void testCopyDestNull() {
        exception.expect(NullArgumentException.class);
        exception.expectMessage(is("[ECL0008]argument[enumeration] is null."));
        new EnumerationIterator<Object>(null);
    }

            }
        } else {
            aces = null;
        }

        return bufferIndex - start;
    }
    public String toString() {
        String ret = "SecurityDescriptor:\n";
        if (aces != null) {
            for (int ai = 0; ai < aces.length; ai++) {
                ret += aces[ai].toString() + "\n";
            }
        } else {
            ret += "NULL";
        }
        return ret;
    }

        // CLI args
        result.add(parseMavenCliOptions(context.parserRequest.args()));
        // maven.config; if exists
        Path mavenConfig = context.rootDirectory != null ? context.rootDirectory.resolve(".mvn/maven.config") : null;
        if (mavenConfig != null && Files.isRegularFile(mavenConfig)) {
            result.add(parseMavenConfigOptions(mavenConfig));
        }
        return result;
    }

            return new DefaultArtifactHandler(
                    id,
                    type.getExtension(),
                    type.getClassifier(),
                    null,
                    null,
                    type.isIncludesDependencies(),
                    type.getLanguage().id(),
                    type.getPathTypes().contains(JavaPathType.CLASSES));

<%@page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8"%>
<ol class="breadcrumb float-sm-right">
	<c:if test="${crudMode == null}">
		<li class="breadcrumb-item active"><la:message key="labels.crud_link_list" /></li>
	</c:if>
	<c:if test="${crudMode != null}">
		<li class="breadcrumb-item"><la:link href="../list">
				<la:message key="labels.crud_link_list" />
			</la:link></li>
	</c:if>
	<c:if test="${crudMode == 1}">

            }

            UnicodeString ucstr = new UnicodeString(resp.name, false);
            out.acctName = ucstr.toString();
            out.type = resp.sid_type;
            out.origin_server = null;
            out.origin_ctx = null;
        }
    }


    void resolveSids0 ( String authorityServerName, CIFSContext tc, jcifs.SID[] sids ) throws CIFSException {
        synchronized ( this.sidCache ) {

  @CollectionSize.Require(absent = ZERO)
  public void testCreateWithNullKeyAndValueSupported() {
    Entry<K, V>[] entries = createSamplesArray();
    entries[getNullLocation()] = entry(null, null);
    resetMap(entries);
    expectContents(entries);
  }

  @MapFeature.Require(value = ALLOWS_NULL_KEYS, absent = REJECTS_DUPLICATES_AT_CREATION)
  @CollectionSize.Require(absent = {ZERO, ONE})

            if ( log.isTraceEnabled() ) {
                log.trace(e.toString());
            }
        }
        setResults(results);
        this.lastName = e == null ? null : e.name;
        return bufferIndex - start;
    }


    @Override
    public String toString () {
        return new String(