public EqualsBuilder append(char lhs, char rhs) {
        if (isEquals == false) {
            return this;
        }
        isEquals = (lhs == rhs);
        return this;
    }
<p>Test if two <code>char</code>s are equal.</p>

@param lhs  the left hand <code>char</code>
@param rhs  the right hand <code>char</code>
@return EqualsBuilder - used to chain calls.
android/android_framework/base/src/main/java/lang3/builder/EqualsBuilder.java