* <p>
 * Beans injected into Mojo parameters are prepared by <a href="https://www.eclipse.org/sisu/">Sisu</a> JSR330-based
 * container: this annotation is only effective on fields of the Mojo class itself, nested bean injection
 * requires Sisu or JSR330 annotations.
 *
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
@Inherited

Таким чином його схема з'явиться в інтерфейсі користувача документації API:

<img src="/img/tutorial/dataclasses/image01.png">

## Dataclasses у вкладених структурах даних { #dataclasses-in-nested-data-structures }

Можна поєднувати `dataclasses` з іншими анотаціями типів, щоб створювати вкладені структури даних.

            final int domainIdPointer = pacStream.readInt();

            // Skip some reserved fields
            pacStream.skipBytes(8);

            this.userAccountControl = pacStream.readInt();

            // Skip some reserved fields
            pacStream.skipBytes(28);

            // Extra SIDs information
            final int extraSidCount = pacStream.readInt();

    }

    @Test
    public void testCaseInsensitivity() throws Exception {
        // Windows reserved names should be caught regardless of case
        try {
            validator.validatePath("\\share\\con");
            fail("Should block lowercase reserved name");
        } catch (SmbException e) {
            // Expected
        }

        try {

        int actualInfoLevel = SMBUtil.readInt2(buffer, 2);
        assertEquals(0x0101, actualInfoLevel);

        // Check reserved bytes (should be 0)
        int reserved = SMBUtil.readInt2(buffer, 4);
        assertEquals(0, reserved);
    }

    @DisplayName("Test writeParametersWireFormat with different FIDs")
    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 0xFFFF, 0x8000, 0x7FFF })

            }

            // Check for Windows reserved names
            String upperComponent = component.toUpperCase();
            if (WINDOWS_RESERVED.contains(upperComponent) || upperComponent.matches("^(CON|PRN|AUX|NUL|COM[1-9]|LPT[1-9])(\\.[^.]+)?$")) {
                throw new SmbException("Path contains Windows reserved name: " + component);
            }

# Copyright 2023 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,

# Copyright 2023 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,

        assertEquals(longMessage, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNestedCause() {
        // Test constructor with nested exception causes
        Exception rootCause = new IllegalStateException("Root cause");
        Exception middleCause = new RuntimeException("Middle cause", rootCause);
        String message = "Top level dictionary error";

Just functions that look the same as the *path operation functions*.

But still, it is very powerful, and allows you to declare arbitrarily deeply nested dependency "graphs" (trees).

/// tip

All this might not seem as useful with these simple examples.

But you will see how useful it is in the chapters about **security**.