private void addAndNotify(int h, int i, NAME name, String value, boolean notifyChange) {
        validateValue(value);
        // Update the hash table.
        entries[i] = new Entry(h, name, value, entries[i]);
        ++size;
        if (notifyChange) {
            onChange(name);
        }
    }
Only adds the specified {@code name} and {@code values}, and do not notify the changes via
{@link #onChange(CharSequence)}.
core/src/main/java/com/linecorp/armeria/common/StringMultimap.java