docs: public static String blobToStr(Blob blob, Charset charset) {
  		InputStream in = null;
  		try {
  			in = blob.getBinaryStream();
  			return IoUtil.read(in, charset);
  		} catch (SQLException e) {
  			throw new DbRuntimeException(e);
  		} finally {
  			IoUtil.close(in);
  		}
  	}