@Override
    public boolean equals(Object obj)
    {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        final Parameter that = (Parameter) obj;
        if (key == null) {
            if (that.key != null)
                return false;
        } else if (!key.equals(that.key))
            return false;
        if (value == null) {
            if (that.value != null)
                return false;
        } else if (!value.equals(that.value))
            return false;
        return true;
    }