方法(访问=受保护)定义输出属性函数num = getNumInputsImpl(~) num = 0;结束函数num = getNumOutputsImpl(~) num = 3;结束函数varargout = isOutputFixedSizeImpl(~，~) varargout{1} = true;Varargout {2} = true;Varargout {3} = true;结束函数varargout = isOutputComplexImpl(~) varargout{1} = false;Varargout {2} = false;Varargout {3} = false;结束函数varargout = getOutputSizeImpl(~) varargout{1} = [1,1];Varargout {2} = [1,1];Varargout {3} = [1,1];结束函数varargout = getOutputDataTypeImpl(~) varargout{1} =“双”；varargout {2} =“双”；varargout {3} =“双”；结束函数图标= getIconImpl(~)在Simulink中定义一个字符串作为System块的图标。图标=的颜色选择器；结束结束