Change Prefix name for Elements

[microshine]

• Use the same prefix for all children elements

Right now to change prefix we need to update static values or set Prefix for each object

for (const key in xadesjs.xml) {
  const xadesClass = xadesjs.xml[key]
  if (xadesClass.prefix === "xades") {
    xadesClass.prefix = "etsi";
  }
}