def METHOD_NAME(key, subkey, arch, value_name, tags_to_apply,
                        get_configuration, configure_environment, restart_syscheckd,
                        wait_for_fim_start):
    '''
    description: Check if the 'wazuh-syscheckd' daemon detects events and creates 'diff' files from monitored
                 keys when the 'report_changes' option is enabled. For this purpose, the test will monitor a key,
                 add a testing value and modify it. Finally, the test will verify that the 'diff' file has been
                 created, and the FIM event generated includes the 'content_changes' field.
    wazuh_min_version: 4.2.0
    tier: 1
    parameters:
        - key:
            type: str
            brief: Path of the registry root key (HKEY_* constants).
        - subkey:
            type: str
            brief: The registry key being monitored by syscheck.
        - arch:
            type: str
            brief: Architecture of the registry.
        - value_name:
            type: str
            brief: Name of the testing value that will be created
        - tags_to_apply:
            type: set
            brief: Run test if matches with a configuration identifier, skip otherwise.
        - get_configuration:
            type: fixture
            brief: Get configurations from the module.
        - configure_environment:
            type: fixture
            brief: Configure a custom environment for testing.
        - restart_syscheckd:
            type: fixture
            brief: Clear the 'ossec.log' file and start a new monitor.
        - wait_for_fim_start:
            type: fixture
            brief: Wait for realtime start, whodata start, or end of initial FIM scan.
    assertions:
        - Verify that FIM events are generated for the changes made on the testing values.
        - Verify that a 'diff' file is created for each monitored value.
        - Verify that FIM events include the 'content_changes' field.
    input_description: A test case (test_report_changes) is contained in external YAML file
                       (wazuh_registry_report_changes.yaml) which includes configuration
                       settings for the 'wazuh-syscheckd' daemon. That is combined with
                       the testing registry keys to be monitored defined in this module.
    expected_output:
        - r'.*Sending FIM event: (.+)$' ('added', 'modified', and 'deleted' events)
    tags:
        - scheduled
        - time_travel
    '''
    check_apply_test(tags_to_apply, get_configuration['tags'])
    values = {value_name: "some content"}
    def report_changes_validator(event):
        """Validate content_changes attribute exists in the event"""
        for value in values:
            _, diff_file = calculate_registry_diff_paths(key, subkey, arch, value)
            assert os.path.exists(diff_file), '{diff_file} does not exist'
            assert event['data'].get('content_changes') is not None, 'content_changes is empty'
    registry_value_cud(key, subkey, wazuh_log_monitor, arch=arch, value_list=values,
                       time_travel=get_configuration['metadata']['fim_mode'] == 'scheduled',
                       min_timeout=global_parameters.default_timeout, triggers_event=True,
                       validators_after_update=[report_changes_validator])