6 string references to YAML keys in batch_test.routing.yml in Drupal 9

BatchTestChainedForm::batchTestChainedFormSubmit1 in core/modules/system/tests/modules/batch_test/src/Form/BatchTestChainedForm.php

Form submission handler #1 for batch_test_chained_form.

BatchTestChainedForm::batchTestChainedFormSubmit2 in core/modules/system/tests/modules/batch_test/src/Form/BatchTestChainedForm.php

Form submission handler #2 for batch_test_chained_form.

BatchTestChainedForm::batchTestChainedFormSubmit3 in core/modules/system/tests/modules/batch_test/src/Form/BatchTestChainedForm.php

Form submission handler #3 for batch_test_chained_form.

BatchTestChainedForm::batchTestChainedFormSubmit4 in core/modules/system/tests/modules/batch_test/src/Form/BatchTestChainedForm.php

Form submission handler #4 for batch_test_chained_form.

BatchTestMultiStepForm::submitForm in core/modules/system/tests/modules/batch_test/src/Form/BatchTestMultiStepForm.php

Form submission handler.

BatchTestSimpleForm::submitForm in core/modules/system/tests/modules/batch_test/src/Form/BatchTestSimpleForm.php

Form submission handler.