* @param dataCrawlStartTime The parameter value of dataCrawlStartTime. (NotNull)
     */
    public void setDataCrawlStartTime(String dataCrawlStartTime) {
        registerVariable("dataCrawlStartTime", dataCrawlStartTime);
    }

    /**
     * Set the value of dataCrawlEndTime, used in parameter comment. <br>

go version -m internal.exe
stdout -buildmode=pie
stdout '^\tpath\trsc.io/fortune'
stdout '^\tmod\trsc.io/fortune\tv1.0.0'

-- go.mod --
module m

-- empty.go --
package main
func main(){}

-- empty.txt --
-- empty.exe --
-- empty.so --

            }

            @Override
            protected String getClientIp() {
                return StringUtil.EMPTY;
            }
        };
    }

    public void test_login() {
        activityHelper.useEcsFormat = false;
        activityHelper.login(OptionalThing.empty());
        assertEquals("action:LOGIN\tuser:-\tpermissions:-", localLogMsg.get());

  public void testConcat() {
    assertThat(Bytes.concat()).isEqualTo(EMPTY);
    assertThat(Bytes.concat(EMPTY)).isEqualTo(EMPTY);
    assertThat(Bytes.concat(EMPTY, EMPTY, EMPTY)).isEqualTo(EMPTY);
    assertThat(Bytes.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Bytes.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Bytes.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Bytes.concat(ARRAY1, ARRAY1, ARRAY1))

        ["1"]       | []            | _             | "append to empty"                                 | { it.append("1") }
        ["1"]       | _             | []            | "add to empty convention"                         | { it.add("1") }

     * Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param hostname The parameter value of hostname. (NotNull)
     */
    public void setHostname(String hostname) {
        registerVariable("hostname", hostname);
    }

    /**
     * Set the value of clustername, used in parameter comment. <br>

        // TODO - should not invalidate the cache for this expression
        "'empty=' + tree.empty"                                                                         | "empty=false"               | "empty=false"                      | "empty=false"
        // TODO - should not invalidate the cache for this expression until the file is removed

stdout 'binary contains module root: true'
stdout 'binary contains an empty GOROOT'

# A binary built with -trimpath should not contain the current workspace.
go build -trimpath -o $WORK/paths-a.exe .
exec $WORK/paths-a.exe $WORK/paths-a.exe
stdout 'binary contains module root: false'
stdout 'binary contains an empty GOROOT'

# A binary from an external module built with -trimpath should not contain

    expectContents();
  }

  // retainAll(null)

  /*
   * AbstractCollection fails the retainAll(null) test when the subject
   * collection is empty, but we'd still like to test retainAll(null) when we
   * can. We split the test into empty and non-empty cases. This allows us to
   * suppress only the former.
   */

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)

  public void testConcat() {
    assertThat(Chars.concat()).isEqualTo(EMPTY);
    assertThat(Chars.concat(EMPTY)).isEqualTo(EMPTY);
    assertThat(Chars.concat(EMPTY, EMPTY, EMPTY)).isEqualTo(EMPTY);
    assertThat(Chars.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Chars.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Chars.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Chars.concat(ARRAY1, ARRAY1, ARRAY1))