legacyLiosetupCallback plugin

Avoid using this legacy feature unless you know what you are doing and have a good reason.

examples

If you define an object like this on the window:

window.liosetup = {
  callback: entity => {/* elided */}
};

Exhibit: That callback will be invoked when the entity is loaded.

window.liosetup = {
  callback: [
    entity => {/* elided */},
    entity => {/* elided */}
  ]
};

Exhibit: Also entirely possible to pass an array, in which case we'll fan out.