public int toComparison() {
        return comparison;
    }
Returns a negative integer, a positive integer, or zero as
the <code>builder</code> has judged the "left-hand" side
as less than, greater than, or equal to the "right-hand"
side.

@return final comparison result
@see #build()
android/android_framework/base/src/main/java/lang3/builder/CompareToBuilder.java