Refactoring ObjectType constraint

[sashirestela]

Refactored methods for ObjectType:

Method	Type	Default Value	Description
schema	SCHEMA	DIRECT	Define the structure.
baseClass	Class<?>[]	(none)	Base classes (Value classes for Maps).
keyClass	Class<?>	void.class	Key class (only for Maps).
maxSize	int	Integer.MAX_VALUE	Outer group's max size (only for schema = COLL*, MAP*).
maxInnerSize	int	Integer.MAX_VALUE	Inner group's max size (only for schema = COLL_COLL, MAP_COLL).
maxChecks	int	20	Max number of items to check by group (only for schema <> DIRECT).
allowNull	boolean	true	Allow nulls in outer groups (only for schema = COLL*, MAP*).
allowInnerNull	boolean	true	Allow nulls in inner groups (only for schema = COLL_COLL, MAP_COLL).

Enum SCHEMA:

Enum Value	Meaning
DIRECT	baseClass
COLL	Collection<baseClass>
COLL_COLL	Collection<Collection<baseClass>>
MAP	Map<keyClass, baseClass>
MAP_COLL	Map<keyClass, Collection<baseClass>>