/**
     * Construct a new value source, using the supplied object as the root from
     * which to start, and using expressions split at the dot ('.') to navigate
     * the object graph beneath this root.
     * @param root the root of the graph.
     */
    public ObjectBasedValueSource(Object root) {
        super(true);
        this.root = root;
    }

    /**

    page.get_by_role("button", name="Try it out").click()
    page.get_by_role("heading", name="Servers").click()
    # Manually add the screenshot
    page.screenshot(path="docs/en/docs/img/tutorial/query-param-models/image01.png")

    # ---------------------
    context.close()
    browser.close()


process = subprocess.Popen(
    ["fastapi", "run", "docs_src/query_param_models/tutorial001.py"]
)
try:

 */
@Deprecated(since = "4.0.0")
public class FileModelSource extends FileSource implements ModelSource2 {

    /**
     * Creates a new model source backed by the specified file.
     *
     * @param pomFile The POM file, must not be {@code null}.
     */
    public FileModelSource(File pomFile) {
        super(pomFile);
    }

    public FileModelSource(Path pomFile) {
        super(pomFile);
    }

            logger.debug("  (f) " + fieldName + " = " + toString(value));
        }
    }

    /**
     * Creates a human-friendly string representation of the specified object.
     *
     * @param obj The object to create a string representation for, may be <code>null</code>.
     * @return The string representation, never <code>null</code>.
     */
    private String toString(Object obj) {
        String str;

`Field` працює так само, як `Query`, `Path` і `Body`, у нього такі самі параметри тощо.

/// note | Технічні деталі

Насправді, `Query`, `Path` та інші, що ви побачите далі, створюють об'єкти підкласів загального класу `Param`, котрий сам є підкласом класу `FieldInfo` з Pydantic.

І `Field` від Pydantic також повертає екземпляр `FieldInfo`.

        super(message, cause);
    }

    /**
     * Constructs a new {@code AbstractMojoExecutionException} exception wrapping an underlying {@code Throwable}.
     *
     * @param cause the cause which is saved for later retrieval by the {@link #getCause()} method.
     *              A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.
     * @since 3.8.3
     */

{* ../../docs_src/background_tasks/tutorial001_py39.py hl[1,13] *}

**FastAPI** creará el objeto de tipo `BackgroundTasks` por ti y lo pasará como ese parámetro.

## Crear una función de tarea { #create-a-task-function }

Crea una función para que se ejecute como la tarea en segundo plano.

Es solo una función estándar que puede recibir parámetros.

 *
 */
public class MissingProjectException extends Exception {

    /**
     * Creates a new exception.
     *
     * @param message The detail message, may be {@code null}.
     */
    public MissingProjectException(String message) {
        super(message);
    }

/**
 * Provides context for mojo execution. Invocation of {@link #run(MojoExecution)} will result in actual execution
 */
public interface MojoExecutionRunner {
    /**
     * Runs mojo execution
     *
     * @param execution mojo execution
     * @throws LifecycleExecutionException
     */
    void run(MojoExecution execution) throws LifecycleExecutionException;

    return new_field_mapping, new_definitions


def is_scalar_field(field: ModelField) -> bool:
    from fastapi import params

    return shared.field_annotation_is_scalar(
        field.field_info.annotation
    ) and not isinstance(field.field_info, params.Body)


def is_sequence_field(field: ModelField) -> bool:
    return shared.field_annotation_is_sequence(field.field_info.annotation)