A number of calculated attributes and collections are provided as GTL-specific extensions to the metamodel.
The following calculated attributes are metamodel extensions specific to GTL:
| 
                             Metaclass  | 
                             GTL-Specific Attributes  | 
|---|---|
| 
                             PdCommon.BaseObject  | 
|
| 
                             PdCommon.BaseModel  | 
|
| 
                             PdOOM.*  | 
|
| 
                             PdOOM.Association  | 
|
| 
                             PdOOM.Attribute  | 
|
| 
                             PdOOM.Class  | 
|
| 
                             PdOOM.Interface  | 
|
| 
                             PdOOM.Operation  | 
|
| 
                             PdOOM.Parameter  | 
The following calculated collections are metamodel extensions specific to GTL: