* Adds a field rule to the transformer.
     * @param name The name of the field.
     * @param xpath The XPath expression for the field.
     */
    public void addFieldRule(final String name, final String xpath) {
        fieldRuleMap.put(name, xpath);
    }

    /**
     * Returns data as XML content of String.
     *
     * @return XML content of String.
     */
    @Override

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 * you may not use this file except in compliance with the License.
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 *     http://www.apache.org/licenses/LICENSE-2.0
 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
 *
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 * either express or implied. See the License for the specific language

 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
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 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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 * either express or implied. See the License for the specific language

 * you may not use this file except in compliance with the License.
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 * either express or implied. See the License for the specific language