Checks if the IncludeAllInstances property is set.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public bool IsSetIncludeAllInstances()
 Return Value
 Return ValueTrue if the IncludeAllInstances property is set.
 Declaration Syntax
 Declaration Syntax| C# | 
public bool IsSetIncludeAllInstances()
 Return Value
 Return Value