Remove duplicates

<?xml version="1.0" encoding="UTF-8"?>
<scenario>
     <name>Remove duplicates</name>
     <script>remove_duplicates</script>
     <allow>EXTRACT_LOAD</allow>
     <sources>
          <source noconnection="true">
               <name>set_to_remove_dups</name>
               <extract>
                   <reader class="com.toolsverse.etl.connector.excel.ExcelXlsxConnector" filename="{app.root.data}\demo\matrix.xlsx" sheetname="norm" />
               </extract>
               <tasks>
                    
                    <task noconnection="true">
                         <name>remove_duplicated_name</name>
                         <class>com.toolsverse.etl.core.task.common.RemoveDuplicates</class>
                         <variables>
                              <KEYS label="Keys" value="first,last"/>
                         </variables>
                    </task>
                    <task noconnection="true">
                         <name>remove_duplicated_cities</name>
                         <class>com.toolsverse.etl.core.task.common.RemoveDuplicates</class>
                         <variables>
                              <KEYS label="Keys" value="city"/>
                         </variables>
                    </task>
               </tasks>
          </source>
     </sources>
     <destinations>
          <destination noconnection="true">
               <name>set_after_removing_dups</name>
               <source>set_to_remove_dups</source>
               <load>
                   <writer class="com.toolsverse.etl.connector.excel.ExcelXlsxConnector" filename="{app.root.data}\demo\matrix-output.xlsx" sheetname="output" />
               </load>
          </destination>
     </destinations>
</scenario>