"strconv"
	"strings"
	"time"
	"unicode/utf8"
)

var (
	errArithMismatchedTypes = errors.New("cannot perform arithmetic on mismatched types")
	errArithInvalidOperator = errors.New("invalid arithmetic operator")
	errArithDivideByZero    = errors.New("cannot divide by 0")

	errCmpMismatchedTypes     = errors.New("cannot compare values of different types")

 *
 * <p>The {@code Packaging} class is an immutable value object, ensuring that once a packaging type is defined, it cannot be changed.</p>
 *
 * <h2>Standard Packaging Types</h2>
 * <ul>
 *     <li>{@code jar}: Packages the project as a Java Archive (JAR) file.</li>

  echo The JAVA_HOME environment variable is not defined correctly, so Apache Maven cannot be started. >&2
  echo JAVA_HOME is set to "%JAVA_HOME%", but "%%JAVA_HOME%%\bin\java.exe" does not exist. >&2
  goto error
)

:checkJavaCmd
if not exist "%JAVACMD%" (
  echo The java.exe command does not exist in PATH nor is JAVA_HOME set, so Apache Maven cannot be started. >&2
  goto error
)

  DefineFunction("MyGrad2", &grad_func2);

  // func cannot be null
  TF_GraphCopyFunction(host_graph_, nullptr, func_, s_);
  EXPECT_EQ(TF_INVALID_ARGUMENT, TF_GetCode(s_));
  EXPECT_EQ(string("'func' argument to TF_GraphCopyFunction cannot be null"),
            string(TF_Message(s_)));

  // Cannot change gradient
  TF_GraphCopyFunction(host_graph_, func_, grad_func1, s_);

    @Override
    public CacheRecord put(
            Key key, ClassRealm extensionRealm, ExtensionDescriptor extensionDescriptor, List<Artifact> artifacts) {
        Objects.requireNonNull(extensionRealm, "extensionRealm cannot be null");

        if (cache.containsKey(key)) {
            throw new IllegalStateException("Duplicate extension realm for extension " + key);
        }

    this
} else {
    val parent = dir("..")
    when {
        parent.file("version.txt").asFile.exists() -> parent
        this == parent -> error("Cannot find 'version.txt' file in root of repository")
        else -> parent.parentOrRoot()
    }
}


fun Project.releasedVersionsFile() = repoRoot().file("released-versions.json")


/**

   * either the field is absent or cannot be parsed as a date.
   */
  fun getDate(name: String): Date? = get(name)?.toHttpDateOrNull()

  /**
   * Returns the last value corresponding to the specified field parsed as an HTTP date, or null if
   * either the field is absent or cannot be parsed as a date.
   */

 * therefore every method of the listener will be called at most once. N.B. The {@link State#FAILED}
 * and {@link State#TERMINATED} states are terminal states, once a service enters either of these
 * states it cannot ever leave them.
 *
 * <p>Implementors of this interface are strongly encouraged to extend one of the abstract classes
 * in this package which implement this interface and make the threading and state management
 * easier.

		return
	}

	writeSuccessResponseHeadersOnly(w)
}

func handleCreateUpdateValidation(s config.Config, subSys, cfgTarget string, isUpdate bool) APIErrorCode {
	if cfgTarget != madmin.Default {
		// This cannot give an error at this point.
		subSysTargets, _ := s.GetAvailableTargets(subSys)
		subSysTargetsSet := set.CreateStringSet(subSysTargets...)
		if isUpdate && !subSysTargetsSet.Contains(cfgTarget) {

    private String sourceLevel = USER_LEVEL;
    private boolean sourceLevelSet = false;

    public void setSourceLevel(String sourceLevel) {
        if (sourceLevelSet) {
            throw new IllegalStateException("Cannot reset sourceLevel attribute; it is already set to: " + sourceLevel);
        } else if (!(USER_LEVEL.equals(sourceLevel) || PROJECT_LEVEL.equals(sourceLevel)  || GLOBAL_LEVEL.equals(sourceLevel))) {