docs: def k_material(ID, T=298.15):
      r'''Returns thermal conductivity of a building, insulating, or refractory
      material from tables  in [1]_, [2]_, and [3]_. Thermal conductivity may or
      may not be dependent on temperature depending on the source used. Function
      must be provided with either a key to one of the dictionaries
      `refractories`, `ASHRAE`, or `building_materials` - or a search term which
      will pick the closest match based on a fuzzy search. To determine which
      source the fuzzy search will pick, use the function `nearest_material`.
      Fuzzy searches are slow; it is preferable to call this function with a
      material key directly.
  
      Parameters
      ----------
      ID : str
          String as described above
      T : float, optional
          Temperature of the material, [K]
  
      Returns
      -------
      k : float
          Thermal conductivity of the material, [W/m/K]
  
      Examples
      --------
      >>> k_material('Mineral fiber')
      0.036
  
      References
      ----------
      .. [1] ASHRAE Handbook: Fundamentals. American Society of Heating,
         Refrigerating and Air-Conditioning Engineers, Incorporated, 2013.
      .. [2] DIN EN 12524 (2000-07) Building Materials and Products
         Hygrothermal Properties - Tabulated Design Values; English Version of
         DIN EN 12524.
      .. [3] Gesellschaft, V. D. I., ed. VDI Heat Atlas. 2nd edition.
         Berlin; New York:: Springer, 2010.
      '''
      if ID not in materials_dict:
          ID = nearest_material(ID)
      if ID in refractories:
          return refractory_VDI_k(ID, T)
      elif ID in ASHRAE:
          return ASHRAE_k(ID)
      else:
          return float(building_materials[ID][1])