IMultiMap (randoop 4.3.3 API)

All Known Implementing Classes:

CheckpointingMultiMap, MultiMap, MultiMap.EmptyMultiMap
```
public interface IMultiMap<K,V>
```
A multimap, which maps each key to a set of values.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`add(K key, V value)`	Precondition: the mapping key→value is not already in the map.
`Set<V>`	`getValues(K key)`	Returns the values that the given key maps to.
`Set<K>`	`keySet()`	Returns the set of keys in this map (the domain).
`boolean`	`remove(K key, V value)`	Precondition: the mapping key→value is in the map.
`int`	`size()`	Returns the size of this map: the number of mappings.
`String`	`toString()`	Returns a String representation of this map.

- Method Detail
  - add
```
boolean add(K key,
            V value)
```
    Precondition: the mapping key→value is not already in the map.
    
    Parameters:
    
    key - cannot be null
    
    value - cannot be null
    
    Returns:
    
    true if the call modifies this object
  - remove
```
boolean remove(K key,
               V value)
```
    Precondition: the mapping key→value is in the map.
    
    Parameters:
    
    key - cannot be null
    
    value - cannot be null
    
    Returns:
    
    true if the call modifies this object
  - getValues
```
Set<V> getValues(K key)
```
    Returns the values that the given key maps to.
    
    Parameters:
    
    key - cannot be null
    
    Returns:
    
    the set of values for the given key
  - keySet
```
Set<K> keySet()
```
    Returns the set of keys in this map (the domain).
    
    Returns:
    
    the set of keys in this map
  - size
```
int size()
```
    Returns the size of this map: the number of mappings.
    
    Returns:
    
    the number of entries in this map
  - toString
```
String toString()
```
    Returns a String representation of this map.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a String representation of this map