public CompareToBuilder append(boolean lhs, boolean rhs) {
        if (comparison != 0) {
            return this;
        }
        if (lhs == rhs) {
            return this;
        }
        if (lhs == false) {
            comparison = -1;
        } else {
            comparison = +1;
        }
        return this;
    }
Appends to the <code>builder</code> the comparison of
two <code>booleans</code>s.

@param lhs  left-hand value
@param rhs  right-hand value
@return this - used to chain append calls
android/android_framework/base/src/main/java/lang3/builder/CompareToBuilder.java