Foreach over a mapping, getting each key/value as K/V.
If the K and/or V is Node, simply iterate over the nodes in the mapping. Otherwise, convert each key/value to T during iteration.
NodeException if the node is not a mapping or an element could not be converted to specified type.
See Implementation
Foreach over a mapping, getting each key/value as K/V.
If the K and/or V is Node, simply iterate over the nodes in the mapping. Otherwise, convert each key/value to T during iteration.