old_contents: from tardis.plasma.properties import *
  
  class PlasmaPropertyCollection(list):
      pass
  
  basic_inputs = PlasmaPropertyCollection([TRadiative, Abundance, Density,
      TimeExplosion, AtomicData, DilutionFactor, LinkTRadTElectron,
      HeliumTreatment])
  basic_properties = PlasmaPropertyCollection([BetaRadiation,
      Levels, Lines, AtomicMass, PartitionFunction,
      GElectron, IonizationData, NumberDensity, LinesLowerLevelIndex,
      LinesUpperLevelIndex, TauSobolev,
      StimulatedEmissionFactor, SelectedAtoms, ElectronTemperature])
  lte_ionization_properties = PlasmaPropertyCollection([PhiSahaLTE])
  lte_excitation_properties = PlasmaPropertyCollection([LevelBoltzmannFactorLTE])
  macro_atom_properties = PlasmaPropertyCollection([BetaSobolev,
      TransitionProbabilities])
  nebular_ionization_properties = PlasmaPropertyCollection([PhiSahaNebular,
      ZetaData, BetaElectron, RadiationFieldCorrection])
  dilute_lte_excitation_properties = PlasmaPropertyCollection([
      LevelBoltzmannFactorDiluteLTE])
  non_nlte_properties = PlasmaPropertyCollection([LevelBoltzmannFactorNoNLTE])
  nlte_properties = PlasmaPropertyCollection([
      LevelBoltzmannFactorNLTE, NLTEData, JBluesBlackBody, PreviousElectronDensities,
      PreviousBetaSobolev, BetaSobolev])
  helium_nlte_properties = PlasmaPropertyCollection([HeliumNLTE,
      RadiationFieldCorrection, ZetaData,
      BetaElectron, LevelNumberDensityHeNLTE, IonNumberDensityHeNLTE])
  helium_lte_properties = PlasmaPropertyCollection([LevelNumberDensity,
                                                    IonNumberDensity])
  helium_numerical_nlte_properties = PlasmaPropertyCollection([
      HeliumNumericalNLTE])
new_contents: from tardis.plasma.properties import *
  
  class PlasmaPropertyCollection(list):
      pass
  
  basic_inputs = PlasmaPropertyCollection([TRadiative, Abundance, Density,
      TimeExplosion, AtomicData, DilutionFactor, LinkTRadTElectron,
      HeliumTreatment])
  basic_properties = PlasmaPropertyCollection([BetaRadiation,
      Levels, Lines, AtomicMass, PartitionFunction,
      GElectron, IonizationData, NumberDensity, LinesLowerLevelIndex,
      LinesUpperLevelIndex, TauSobolev,
      StimulatedEmissionFactor, SelectedAtoms, ElectronTemperature])
  lte_ionization_properties = PlasmaPropertyCollection([PhiSahaLTE])
  lte_excitation_properties = PlasmaPropertyCollection([LevelBoltzmannFactorLTE])
  macro_atom_properties = PlasmaPropertyCollection([BetaSobolev,
      TransitionProbabilities])
  nebular_ionization_properties = PlasmaPropertyCollection([PhiSahaNebular,
      ZetaData, BetaElectron, RadiationFieldCorrection])
  dilute_lte_excitation_properties = PlasmaPropertyCollection([
      LevelBoltzmannFactorDiluteLTE])
  non_nlte_properties = PlasmaPropertyCollection([LevelBoltzmannFactorNoNLTE])
  nlte_properties = PlasmaPropertyCollection([
      LevelBoltzmannFactorNLTE, NLTEData, PreviousElectronDensities,
      PreviousBetaSobolev, BetaSobolev])
  helium_nlte_properties = PlasmaPropertyCollection([HeliumNLTE,
      RadiationFieldCorrection, ZetaData,
      BetaElectron, LevelNumberDensityHeNLTE, IonNumberDensityHeNLTE])
  helium_lte_properties = PlasmaPropertyCollection([LevelNumberDensity,
                                                    IonNumberDensity])
  helium_numerical_nlte_properties = PlasmaPropertyCollection([
      HeliumNumericalNLTE])
subject: Remove JBluesBlackBody from the nlte_properties collection.