private static Language getLanguage(String languageId) throws LanguageNotFoundException {
		Language language = LANGUAGE_CACHE.get(languageId);
		if (language == null) {
			language =
				DefaultLanguageService.getLanguageService().getLanguage(new LanguageID(languageId));
			LANGUAGE_CACHE.put(languageId, language);
		}
		return language;
	}
Get the constructed program.  If this builder was not constructed with a consumer,
the caller should dispose the builder after either the program is no longer
in use, or a new consumer has been added to the program (e.g., program opened
in a tool or another consumer explicitly added).
@return constructed program
Ghidra/Features/Base/src/main/java/ghidra/program/database/ProgramBuilder.java