code: public static List<String> getMIMETypes(final String pFileExt) {
          List<String> types = sExtToMIME.get(StringUtil.toLowerCase(pFileExt));
          return maskNull(types);
      }
docs: Returns all MIME types for the given file extension.
  
  @param pFileExt the file extension
  
  @return a {@link List} of {@code String}s containing the MIME types, or an empty
  list, if there are no known MIME types for the given file extension.