Shell Script return; : I'm analyzing a shell script and I'm a little confused with the piece of code bellow.

Can someone explain me what **return;** is doing in this case? 

if [ -f "$BYPASS_EXISTING_NETWORK_TEST_FILE" ]; then

      dloginfo "Skipping existing network test; mandated by configuration."
      # Consume the file.
      rm -f "$BYPASS_EXISTING_NETWORK_TEST_FILE"
      return;
   fi 