code: def configspace(self) -> ConfigurationSpace:
      cs = ConfigurationSpace(seed=0)
      x = Float("x", (-5, 5), default=-5)
      cs.add_hyperparameters([x])
  
      return cs
  
file_path: SMAC3/examples/1_basics/1_quadratic_function.py
imports: import numpy
  from ConfigSpace import Configuration, ConfigurationSpace, Float
  from matplotlib import pyplot
  from smac import HyperparameterOptimizationFacade
  from smac import RunHistory, Scenario
label_desc: Use image node_id 1 for calling the QuadraticFunction obj's underlying member method code with example usage: obj.configspace() and returns: cs