public String getComputedNativeOptions() {
		if (nativeOptions != null) {
			return nativeOptions;
		} // Only return the default if not using Apache impl.
		else {
			return usingApache() ? null : String.format("-F -n %d", lines);
		}
	}
Describes options to the {@code tail} source module.

@author Eric Bottard
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/modules/metadata/TailSourceOptionsMetadata.java