<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_correction(self, entry):
 """ Gets the BandFilling correction for a defect entry """

        eigenvalues = entry.parameters["eigenvalues"]
        kpoint_weights = entry.parameters["kpoint_weights"]
        potalign = entry.parameters["potalign"]
        vbm = entry.parameters["vbm"]
        cbm = entry.parameters["cbm"]

        bf_corr = self.perform_bandfill_corr(eigenvalues, kpoint_weights, potalign, vbm, cbm)

        entry.parameters["bandfilling_meta"] = dict(self.metadata)

        return {"bandfilling": bf_corr}