docs: def get_class(self, class_name, init_class=False, step_func=None):
          """
          Get a class descriptor for the class.
  
          :param str class_name:  Name of class.
          :param bool init_class: Whether the class initializer <clinit> should be
                                  executed.
          :param func step_func: Callback function executed at every step of the simulation manager during
                               the execution of the main <clinit> method
          """
          # try to get the soot class object from CLE
          java_binary = self.state.javavm_registers.load('ip_binary')
          soot_class = java_binary.get_soot_class(class_name, none_if_missing=True)
          # create class descriptor
          class_descriptor = SootClassDescriptor(class_name, soot_class)
          # load/initialize class
          if init_class:
              self.init_class(class_descriptor, step_func=step_func)
          return class_descriptor