@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;
        }