@interface NLPLearnerUtils : NSObject + (BOOL)isInternalInstall; + (void)initialize; + (unsigned long long)sourceForEvent:(id)a0; + (BOOL)checkVietnameseCharactersInText:(id)a0; + (id)getAttachmentURLByName:(id)a0 attachments:(id)a1 error:(id *)a2; + (id)getAttachmentURLByName:(id)a0 inDirectory:(id)a1 error:(id *)a2; + (id)languageForText:(id)a0; + (id)languageForText:(id)a0 checkVietnamese:(BOOL)a1; + (id)messageContentForEvent:(id)a0; + (id)messageContentForEvent:(id)a0 andLanguage:(id)a1; + (void)removeTemporaryFile:(id)a0; @end