@Test
    void requireThatExtraFieldInputImplicitThrows() throws ParseException {
        try {
            var schema = """
                    search indexing_extra_field_input_implicit {
                        document indexing_extra_field_input_implicit {
                        }
                        field foo type string {
                            indexing: index
                        }
                    }
                   """;
            ApplicationBuilder.createFromString(schema);
            fail("Expected exception");
        }
        catch (IllegalArgumentException e) {
            assertEquals("For schema 'indexing_extra_field_input_implicit', field 'foo': " +
                         "Invalid expression 'tokenize normalize stem:\"BEST\"': Expected string input, but no input is provided",
                         Exceptions.toMessageString(e));
        }
    }
@author Simon Thoresen Hult
@author bratseth
config-model/src/test/java/com/yahoo/schema/processing/IndexingInputsTestCase.java