docs: def warsaw_to_warsawmass(C, parameters=None, sectors=None):
      """Translate from the Warsaw basis to the 'Warsaw mass' basis.
  
      Parameters used:
      - `Vus`, `Vub`, `Vcb`, `gamma`: elements of the unitary CKM matrix (defined
        as the mismatch between left-handed quark mass matrix diagonalization
        matrices).
      """
      p = default_parameters.copy()
      if parameters is not None:
          # if parameters are passed in, overwrite the default values
          p.update(parameters)
      # start out with a 1:1 copy
      C_out = C.copy()
      # rotate left-handed up-type quark fields in uL-uR operator WCs
      C_rotate_u = ['uphi', 'uG', 'uW', 'uB']
      for name in C_rotate_u:
          _array = smeft_toarray(name, C)
          V = ckmutil.ckm.ckm_tree(p["Vus"], p["Vub"], p["Vcb"], p["delta"])
          UuL = V.conj().T
          _array = UuL.conj().T @ _array
          _dict = smeft_fromarray(name, _array)
          C_out.update(_dict)
      # diagonalize dimension-5 Weinberg operator
      _array = smeft_toarray('llphiphi', C)
      _array = np.diag(ckmutil.diag.msvd(_array)[1])
      _dict = smeft_fromarray('llphiphi', _array)
      C_out.update(_dict)
      return C_out