code: public static <T extends File> T createFileBase64(final SecurityContext securityContext, final String rawData, final Class<T> t) throws FrameworkException, IOException {
  
  		Base64URIData uriData = new Base64URIData(rawData);
  
  		return createFile(securityContext, uriData.getBinaryData(), uriData.getContentType(), t);
  
  	}
docs: Create a new image node from image data encoded in base64 format.
  
  If the given string is an uuid of an existing file, transform it into
  the target class.
  
  @param <T>
  @param securityContext
  @param rawData
  @param t defaults to File.class if null
  @return file
  @throws FrameworkException
  @throws IOException