Defines a collection of flow content objects.

Adds an object to the collection.

Clears the collection.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

Removes an object from the collection.

Removes the object at the specified index from the collection.

This method supports the internal library infrastructure and should not be used by external client code.

Replaces an object at the specified index in the collection.

This method supports the internal library infrastructure and should not be used by external client code.