public V get(final V defaultValue) {
            final String value = System.getProperty(propertyName);
            return value == null ? defaultValue : converter.apply(value);
        }
Retrieves the value of this property, or the given default if no value was set.

@return the value of this property, or the given default if no value was set
inlong-sort/sort-end-to-end-tests/sort-end-to-end-tests-v1.18/src/test/java/org/apache/inlong/sort/tests/utils/TestUtils.java