* Object[])} comparator when comparing a value outside the set of values it can compare.
   * Extending {@link ClassCastException} may seem odd, but it is required.
   */
  static final class IncomparableValueException extends ClassCastException {
    final Object value;

    IncomparableValueException(Object value) {
      super("Cannot compare value: " + value);
      this.value = value;
    }

            <property name='regex' value='^[A-Z][\$a-zA-Z0-9]*$'/>
        </rule-config>
        <rule-config name='FieldName'>
            <property name='finalRegex' value='^[a-z][a-zA-Z0-9]*$'/>
            <property name='staticFinalRegex' value='^logger$|^[A-Z][A-Z_0-9]*$|^serialVersionUID$'/>
        </rule-config>
        <rule-config name='MethodName'>
            <property name='regex' value='^[a-z][\$_a-zA-Z0-9]*$|^.*\s.*$'/>

  /**
   * Verifies that {@code rowKey}, {@code columnKey} and {@code value} are non-null, and returns a
   * new entry with those values.
   */
  static <R, C, V> Cell<R, C, V> cellOf(R rowKey, C columnKey, V value) {
    return immutableCell(
        checkNotNull(rowKey, "rowKey"),
        checkNotNull(columnKey, "columnKey"),
        checkNotNull(value, "value"));
  }

  /**

}

// Check if the directive COPY is requested.
func isDirectiveCopy(value string) bool {
	// By default if directive is not set we
	// treat it as 'COPY' this function returns true.
	return value == copyDirective || value == ""
}

// Check if the directive REPLACE is requested.
func isDirectiveReplace(value string) bool {
	return value == replaceDirective
}

        implements Scope, MojoExecutionListener {

    public <T> void seed(Class<T> clazz, Provider<T> value) {
        getScopeState().seed(clazz, value::get);
    }

    @Override
    public <T> Provider<T> scope(final Key<T> key, Provider<T> unscoped) {
        Object qualifier = key.getAnnotation() instanceof Named n ? n.value() : key.getAnnotation();
        org.apache.maven.di.Key<T> k =

    /**
     * Sets the header named [name] to [value]. If this request already has any headers
     * with that name, they are all replaced.
     */
    open fun header(
      name: String,
      value: String,
    ) = apply {
      headers[name] = value
    }

    /**
     * Adds a header with [name] and [value]. Prefer this method for multiply-valued
     * headers like "Cookie".
     *

    }

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;

    }

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;

  private static final class JavaNioCreator extends TempFileCreator {
    @Override
    File createTempDir() {
      try {
        return java.nio.file.Files.createTempDirectory(
                Paths.get(JAVA_IO_TMPDIR.value()), /* prefix= */ null, directoryPermissions.get())
            .toFile();
      } catch (IOException e) {
        throw new IllegalStateException("Failed to create directory", e);
      }
    }

    @Override

```

/// tip

The second argument to <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> is the default value to return.

If not provided, it's `None` by default, here we provide `"World"` as the default value to use.

///

Then you could call that Python program:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console