def METHOD_NAME(self):
    self.use_temp_region()
    self.runModule("r3.in.ascii", input="-", stdin_=FOREST, output=self.forest)
    self.to_remove.append(self.forest)
    self.runModule("g.region", raster_3d=self.forest)
    self.runModule(
        "r3.in.ascii", input="-", stdin_=PF, output=self.pf_ref, null_value="N"
    )
    self.to_remove.append(self.pf_ref)
    self.runModule(
        "r3.in.ascii", input="-", stdin_=PFF, output=self.pff_ref, null_value="N"
    )
    self.to_remove.append(self.pff_ref)
    self.runModule(
        "r3.in.ascii",
        input="-",
        stdin_=FRAG,
        output=self.forest_frag_ref,
        null_value="N",
    )
    self.to_remove.append(self.forest_frag_ref)