You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: MixedNoiseSystemModel.m
    path of file: ./repos/libDirectional/lib/external/NonlinearEstimationToolbox/Interfaces/Models/System
    
    the code of the file until where you have to start completion: 
classdef MixedNoiseSystemModel < handle
    % Abstract base class for system models corrupted by a mixture additive and arbitrary noise.
    %
    % MixedNoiseSystemModel Methods:
    %   setNoise         - Set the system noise.
    %   setAdditiveNoise - Set the pure additive system noise.
    %   systemEquation   - The system equation.
    %   derivative       - Compute the first-order and second-order deriv
    
function predictedState = simulate(obj, state)
            % Simulate the temporal evolution for a given system state.
            %
            % Parameters:
            %   >> state (Column vector)
            %      The system state to predict.
            %
            % Returns:
            %   << predictedState (Column vector)
            %      The simulated temporal system state evolution.
            
            if ~Checks.isColVec(state)
                error('MixedNoiseSystemModel:InvalidSystemState', ...
                      'state must be a column vector.');
            end