def METHOD_NAME(self):
    outputs = self.output_spec().get()
    if self.inputs.process == "disassemble":
        outputs["affine_transform"] = os.path.abspath(
            f"01_{self.inputs.output_prefix}_AffineTransform.mat"
        )
        outputs["displacement_field"] = os.path.abspath(
            f"00_{self.inputs.output_prefix}_DisplacementFieldTransform.nii.gz"
        )
    if self.inputs.process == "assemble":
        outputs["out_file"] = os.path.abspath(self.inputs.out_file)
    return outputs