Holds references to a set of Ordered Targets. These targets will be observed together in this group.

General Info
Name	ObservingGroup
Owner	schedblock
Visibility	public
Is Active	false
Is Abstract	false

Relations
Name	Type	Begins	Ends
unnamed	Association	ObservingGroup	OrderedTarget
unnamed	Association	SchedBlock	ObservingGroup
unnamed	Association	ObservingGroup	Target

Attributes
Name	Type	Classifier	Default Value
index	Integer	ObservingGroup
unnamed	OrderedTarget	ObservingGroup
name	String	ObservingGroup
mainTarget	Target	ObservingGroup