new_contents: from sunpy.net.attr import SimpleAttr
  
  __all__ = ['Detector']
  
  class Detector(SimpleAttr):
  	"""
  	Detector number for FERMI GBM
  	"""
  
  
  class Datatype(SimpleAttr):
  	"""
  	Data type of GBM - either CSPEC or CTIME
  	"""
subject: add GBM detector and datatype attrs