def METHOD_NAME(request, response):
    input = request.inputs['input'][0].file
    # What do we need to assert a Complex input?
    # assert type(input) is str
    import grass.script as grass
    # Import the raster and set the region
    if grass.run_command("r.in.gdal", flags="o", out="input",
                         input=input, quiet=True) != 0:
        raise NoApplicableCode("Could not import cost map. "
                               "Please check the WCS service.")
    if grass.run_command("g.region", flags="a", rast="input") != 0:
        raise NoApplicableCode("Could not set GRASS region.")
    # Add 1
    if grass.mapcalc("$output = $input + $value", output="output",
                     input="input", value=1.0, quiet=True):
        raise NoApplicableCode("Could not use GRASS map calculator.")
    # Export the result
    _, out = tempfile.mkstemp()
    os.environ['GRASS_VERBOSE'] = '-1'
    if grass.run_command("r.out.gdal", flags="f", input="output",
                         type="UInt16", output=out, overwrite=True) != 0:
        raise NoApplicableCode("Could not export result from GRASS.")
    del os.environ['GRASS_VERBOSE']
    response.outputs['output'].file = out
    return response