docs: public void addLiteralSchema(String ddlText) throws IOException {
          File temp = File.createTempFile("literalschema", "sql");
          temp.deleteOnExit();
          FileWriter out = new FileWriter(temp);
          out.write(ddlText);
          out.close();
          addSchema(URLEncoder.encode(temp.getAbsolutePath(), "UTF-8"));
      }