Class ModelMap

A utility wrapper around an associative array that stores models.

Name	Type	Description
`data`	`TValue[TKey]`

Name	Description
`each`	Allows applying a delegate over the `values` of the mapping.
`filter`	Allows using a delegate to `filter` the `keys`/`values` of the mapping into a new mapping.
`filter`	Allows using a delegate to `filter` the `values` of the mapping.
`get`	Return the value for a `key`.
`get`	Return the value for a `key`, or if it doesn't exist a default value.
`has`	Returns true if the `key` exists within the mapping.
`keys`	Returns an array of `keys` from the mapping.
`keyUnion`	Return the `set`-union for an array of `keys`
`length`	Returns the `length` of the mapping.
`opApply`
`opCall`	Utility method that returns the value for a `key`.
`opIndex`
`opIndexAssign`
`pick`	Returns a single value from the mapping, based on the return value of a delegate.
`remove`	Removes a `key`.
`set`	Set the `key` to a `value`.
`subset`	Returns a new mapping from a `subset` of `keys`.
`values`	returns an array of `values` from the mapping.