How to modify the EF complex object template to not update unless the value is different

model.tt

<#=code.SpaceAfter(Accessibility.ForSetter(complexProperty))#>set
{
     if ( (<#=code.FieldName(complexProperty)#> != null && value == null) ||
	  (<#=code.FieldName(complexProperty)#> == null && value != null) ||
	  (<#=code.FieldName(complexProperty)#> != null && !<#=code.FieldName(complexProperty)#>.Equals(value))
	)
    {
        <#=ChangingMethodName(complexProperty)#>(value);
	ReportPropertyChanging("<#=complexProperty.Name#>");
	<#=code.FieldName(complexProperty)#> = SetValidValue(<#=code.FieldName(complexProperty)#>, value, "<#=complexProperty.Name#>");
	<#=InitializedTrackingField(complexProperty, code)#> = true;
	ReportPropertyChanged("<#=complexProperty.Name#>");
	<#=ChangedMethodName(complexProperty)#>();
    }
}