docs: def complement(self, other):
          """
          Calculate the complement of `self` and `other`.
  
          :param other:   Another SimVariableSet instance.
          :return:        The complement result.
          """
  
          s = SimVariableSet()
          s.register_variables = self.register_variables - other.register_variables
          s.register_variable_offsets = self.register_variable_offsets - other.register_variable_offsets
          s.memory_variables = self.memory_variables - other.memory_variables
          s.memory_variable_addresses = self.memory_variable_addresses - other.memory_variable_addresses
  
          return s