Rename GET_SET_KEY operator in SAFE_GET_KEY operator

README.md

@@ -549,7 +549,7 @@ Other documented operators are:
 * DIV(obj1, obj2, obj3) : Set obj1 to the division of obj2 and obj3. Default is '/' C operator.
 * GET\_KEY (container, key) --> &value: Return a pointer to the value object within the container associated to the key 'key' or return NULL if no object is associated to this key. The pointer to the value object remains valid until any modification of the container. 
 * SET\_KEY (container, key, value): Associate the key object 'key' to the value object 'value' in the given container. 
-* GET\_SET\_KEY (container, key) --> &value: return a pointer to the value object within the container associated to the key 'key' if it exists, or create a new entry in the container and associate it to the key 'key' with the default initialization before returning its pointer. The pointer to the object remains valid until any modification of the container. The returned pointer is therefore never NULL.
+* SAFE\_GET\_KEY (container, key) --> &value: return a pointer to the value object within the container associated to the key 'key' if it exists, or create a new entry in the container and associate it to the key 'key' with the default initialization before returning its pointer. The pointer to the object remains valid until any modification of the container. The returned pointer is therefore never NULL.
 * ERASE\_KEY (container, key) --> bool: Erase the object associated to the key 'key' within the container. Return true if successful, false if the key is not found (nothing is done).
 * PUSH(obj, subobj) : Push 'subobj' (of type SUBTYPE() ) into the container 'obj'. How and where it is pushed is container dependent.
 * POP(&subobj, obj) : Pop an object from the container 'obj' and save it in the object '*subobj' (of type SUBTYPE()) if subobj is not NULL (giving back the ownership of the sub object to the caller). Which object is popped is container dependent. The container shall have at least one object.