When no groups are given in the ApiDoc, there should be no GroupExclusion and the Entity should be parsed wihtout exclusions.
Otherwise only the "Default" group of the Entity would be parsed, which may not be used.
The ApiDoc should not enforce the Entity to be grouped with "Default", to generate a "full-view" of it.
Updated deprecated MinLength assertion to Length
Updated array of object parsing
Handled deprecated calls because of using
AbstractType (not sure if it is the best way, though)