Associates the specified element with the specified key in the element map with the specified identifier.
Parameters:
elementMapId
Note: When the element map with such an identifier does not exist, the generator raises an error.
key
Note: null value for the hash key is not allowed.
In that case the function simply does nothing and returns false.
element
true, if a new key/element association has been created;
false, if such an association already existed in that element map.
findElementByKey(), checkElementByKey(), removeElementByKey()