class BinData::BaseArgProcessor

def extract_args(obj_class, obj_args)

extracts [value, sanitized_parameters, parent].
Takes the arguments passed to BinData::Base.new and 
def extract_args(obj_class, obj_args)
  value, params, parent = separate_args(obj_class, obj_args)
  sanitized_params = SanitizedParameters.sanitize(params, obj_class)
  [value, sanitized_params, parent]
end