The `goog.structs.Collection` Interface

`goog.structs.Collection()`

An interface for a collection of values. @interface

unhandled information:

type: 'interface'

`.add`

value {*}: Value to add to the collection.

`.contains`

value {*}: Value to find in the tree.
returns {boolean}: Whether the collection contains the specified value.

`.getCount`

returns {number}: The number of values stored in the collection.

`.remove`

value {*}: Value to remove from the collection.