-# Fully process a content as a nit source file.
-fun hightlightcode(hl: HighlightVisitor, content: String): HLCode
+# Fully process `content` as a Nit source file.
+#
+# Set `print_errors = true` to print errors in the code to the console.
+fun hightlightcode(hl: HighlightVisitor, content: String, print_errors: nullable Bool): HLCode