How to set system modified date on file in Mule

I have a requirement like transferring a file from a inbound directory to a outbound directory using file connector in Mule. While transferring the file it is processed in a working directory configured in the input file connector.
Now, my requirement is , if I place an old file in the file input directory, the file in the working directory should have the current time stamp on the system date modified. It is something similar like "Touch" command used in Unix to set the system modified date.

Please not I don't want to use any Groovy Script method or any other hack method that can affect the performance in order to achieve this. Following is my Mule mflow:-

<file:connector name="File"     autoDelete="true" streaming="true" validateConnections="true" doc:name="File" outputAppend="true"/>
<file:connector name="File1" autoDelete="false" streaming="false" validateConnections="true" doc:name="File"/>
<flow name="FileReadandDeleteFlow1" doc:name="FileReadandDeleteFlow1">
    <file:inbound-endpoint   responseTimeout="10000" doc:name="File" connector-ref="File" moveToDirectory="E:\backup\test_workingDir"  path="E:\backup\test" moveToPattern="processingFile.xml">
    </file:inbound-endpoint>
    <file:outbound-endpoint path="E:\backup\test_out" outputPattern="Finaloutput.txt" responseTimeout="10000" connector-ref="File1" doc:name="File"/>

Thanks in advance

Solution

You can #[function:dateStamp] or #[function:datestamp:dd-MM-yy] to achieve this as described in this link

An example would be :

<file:outbound-endpoint path="E:\backup\test_out" outputPattern="Finaloutput_[function:dateStamp].txt" responseTimeout="10000" connector-ref="File1" doc:name="File"/>

EDIT:

To always show the current timestamp to your files in working firectory, you can create another flow which reads files from working directory at a specific interval, and just copy them to same directory using file:outbound-endpoint