Put all Key
Inserts all key - value pairs into the specified map variable, if key(s) already present in the map-variable the key's associated value is replaced with new value.
<target-map variable> is a map variable in which the action take place
<source-map-variable> is a map variable from where all the key-value mappings will be added to the above target map variable
In the following sample code, the key-value mappings in map named "Games" is added to another map named "Sports"