module_builder-8.x-3.x-dev/tests/modules/module_builder_test_component_type/module_builder_test_component_type.services.yml

services:
  # Replacement DCB service: switches the Generate class to one that showcases
  # different data formats to test the component form UI.
  module_builder_test_component_type.drupal_code_builder:
    decorates: module_builder.drupal_code_builder
    # Give this a lower priority than module_builder_devel.drupal_code_builder
    # so it decorates the service last, meaning that this replacement service is
    # the actual one that's in use when both this module and
    # module_builder_devel are enabled. This isn't the case in tests, but to
    # develop the tests it's useful to enable this module and use the form
    # manually.
    decoration_priority: -5
    class: Drupal\module_builder_test_component_type\TestDrupalCodeBuilder