void forEach(
void f(K key, V value)
)

Applies f to each key-value pair of the map.

Calling f must not add or remove keys from the map.

Source

/**
 * Applies [f] to each key-value pair of the map.
 *
 * Calling `f` must not add or remove keys from the map.
 */
void forEach(void f(K key, V value));