fix: centralize the addition of the (optional) semicolon in our code snippets

Author: gennaroprota

share/mrdocs/addons/generator/common/partials/symbol/signature/record.hbs

@@ -24,5 +24,5 @@
       final;` is ill-formed (`final` can't be used on a non-defining
       declaration). Similarly, don't show a semicolon if there are base
       classes. --}}
-{{~#unless (or isSeeBelow isFinal bases)}};{{/unless~}}
-{{~#isSeeBelow}} { /* see-below */ };{{/isSeeBelow~}}
+{{~#isSeeBelow}} { /* see-below */ }{{/isSeeBelow~}}
+{{#if (or isSeeBelow (and (not isFinal) (isEmpty bases)))}};{{/if}}

src/lib/Support/Handlebars.cpp

@@ -3793,6 +3793,16 @@ block_helper_missing_fn(
     return {};
 }
 
+Expected<dom::Value>
+is_empty_fn(dom::Array const& arguments)
+{
+    if (arguments.size() != 2) {
+        return Unexpected(Error("isEmpty requires exactly one argument"));
+    }
+
+    return dom::Value(isEmpty(arguments.get(0)));
+}
+
 void
 registerBuiltinHelpers(Handlebars& hbs)
 {
@@ -3804,6 +3814,7 @@ registerBuiltinHelpers(Handlebars& hbs)
     hbs.registerHelper("log", dom::makeVariadicInvocable(log_fn));
     hbs.registerHelper("helperMissing", dom::makeVariadicInvocable(helper_missing_fn));
     hbs.registerHelper("blockHelperMissing", dom::makeInvocable(block_helper_missing_fn));
+    hbs.registerHelper("isEmpty", dom::makeVariadicInvocable(is_empty_fn));
 }
 
 void