Apache Camel Rename file but do not move to .camel directory

Hi i'm using apache camel 2.9 with spring. My requirement is this.

camel looks for a file in a specific directory (e.g import) and the file format is this test_22-10-2015_p1.psv

After the file has been processed i need to rename the file to test_22-10-2015_p1_ACK.psv and keep it in the same folder without moving it to the .camel directory.

Is this possible

Thanks in advance