Value Object representing an object.
An object can be either typed or untyped. When an object is typed it means that it has an identifier, the FQSEN,
pointing to an element in PHP. Object types that are untyped do not refer to a specific class but represent objects
Initializes this object with an optional FQSEN, if not provided this object is considered 'untyped'.
|public __toString () : string|
() : ?
Returns the FQSEN associated with this object.