Insert a new object. The object type can be user, group,
document or anchor. Depending on the type other object
attributes has to be set. The parameter array contains the
required elements 'object' and 'content' (if the object is a
document) and the optional parameters 'parameters', 'mode'
and 'attributeSelector'. The 'object' must contain all
attributes of the object. 'parameters' is an object as well
holding futher attributes like the destination (attribute key
is 'Parent'). 'content' is the content of the document.
'mode' can be a combination of the following flags:
The object in inserted into the server.
See also hwapi_replace().