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## <iron-jsonp-library>
Loads specified jsonp library.
Example:
```html
Will emit 'api-load' event when loaded, and set 'loaded' to true
Implemented by Polymer.IronJsonpLibraryBehavior. Use it to create specific library loader elements.
## Polymer.IronJsonpLibraryBehavior
`Polymer.IronJsonpLibraryBehavior` loads a jsonp library. Multiple components can request same library, only one copy will load.
Some libraries require a specific global function be defined. If this is the case, specify the `callbackName` property.
You should use an HTML Import to load library dependencies when possible instead of using this element.