Remove unused template variables

[tonoslav]

Is your feature request related to a problem? Please describe.

I have dynamic values which are adding into templates which should replace, but sometimes there is possibility to use some variable, sometimes not, and I need them to be removed if it was not set

Describe the solution you'd like

Replace every ${anything} which was not set with $this->setValue('anything', 'something') to be replaced with empty string

Describe alternatives you've considered

It is difficult to preset all values as empty which could be used because they are pretty dynamic

Additional context

For example I have clients which might have some sub client below him (I use dots as separator)
for example
${user.name}
and
${user.subuser.name}

but that ${user.subuser.name} is only available if he is set , what is not always and than that ${user.subuser.name} is left in my word file even if it shouldn't be

This is simplified, this problem would be pretty easy solvable like this , but it is more complex , imagine it more recursive

So just to sum it up, I just need something which remove all unreplaced/unused ${anything}

[ProtestSoftware]

A solution I am currently using is to run this code after filling out the document.

foreach($templateProcessor->getVariables() as $variable){
    $templateProcessor->setValue($variable, '');
}

This will get all unused variables and set them to an empty string.