@Override
    public Object[] toArray() {
        Object[] result = new Object[mSize];
        System.arraycopy(mArray, 0, result, 0, mSize);
        return result;
    }
Return the number of items in this array map.
replugin-host-library/replugin-host-lib/src/main/java/com/qihoo360/replugin/utils/basic/ArraySet.java