Need to validate ftl before saving in DB

Hi,

I use the below code to validate a ftl string I get from the UI, before
saving in the DB. If an exception is thrown, I know there is a validation
error and I report it accordingly to the UI. 

================= BEGIN CODE ======================

Configuration config = new Configuration();
config.setStrictSyntaxMode(true);
config.setTagSyntax(Configuration.AUTO_DETECT_TAG_SYNTAX);

StringTemplateLoader stringLoader = new StringTemplateLoader();
stringLoader.putTemplate(name, content);
config.setTemplateLoader(stringLoader);

try {
    config.getTemplate(name);
} catch (IOException e) {
    LOG.error("The template's body is malformed.");
    throw new CustomException("The template body is malformed.", e);
}

=================== END CODE =====================

My problem is that, the above code seems to work partly. It does not
validate the directives.
For example, even if I miss out on closing a directive, the
"config.getTemplate(name)" does not throw an exception -
    <#list animals as being>
        ${being.name}

An exception is thrown, only when a variable, like - "${being.name}" is
typed erroneously; something like - "${being"

How can I validate the the directives?
Also, Is this the correct way to completely validate a template? 

I am using freemarker version 2.3.13

Regards,
Rishabh

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