An internal resolved representation of a <a href="Binding-class.html"><code>Binding</code></a> used by the <a href="Injector-class.html"><code>Injector</code></a>.
A <a href="Binding-class.html"><code>Binding</code></a> is resolved when it has a factory function. Binding to a class, alias, or value, are just convenience
methods, as <a href="Injector-class.html"><code>Injector</code></a> only operates on calling factory functions.