use NsIdentification to get doc

...seclipse/iec61850/nsd/provider/LNClassesItemProvider.java

.../iec61850/nsd/provider/NsdItemProviderAdapterFactory.java

...ntralesupelec.edf.riseclipse.iec61850.nsd/model/nsd.ecore

...esupelec/edf/riseclipse/iec61850/nsd/AbstractLNClass.java

...esupelec/edf/riseclipse/iec61850/nsd/DocumentedClass.java

...ntralesupelec/edf/riseclipse/iec61850/nsd/NsdFactory.java

...tralesupelec/edf/riseclipse/iec61850/nsd/TitledClass.java

...ec/edf/riseclipse/iec61850/nsd/impl/AbbreviationImpl.java

...edf/riseclipse/iec61850/nsd/impl/AbstractLNClassImpl.java

...elec/edf/riseclipse/iec61850/nsd/impl/AnyLNClassImpl.java

...pelec/edf/riseclipse/iec61850/nsd/impl/BasicTypeImpl.java

...ralesupelec/edf/riseclipse/iec61850/nsd/impl/CDCImpl.java

...iseclipse/iec61850/nsd/impl/ConstructedAttributeImpl.java

...c/edf/riseclipse/iec61850/nsd/impl/DataAttributeImpl.java

...elec/edf/riseclipse/iec61850/nsd/impl/DataObjectImpl.java

...pelec/edf/riseclipse/iec61850/nsd/impl/DependsOnImpl.java

...edf/riseclipse/iec61850/nsd/impl/DocumentedClassImpl.java

...lec/edf/riseclipse/iec61850/nsd/impl/EnumerationImpl.java

...iseclipse/iec61850/nsd/impl/FunctionalConstraintImpl.java

...supelec/edf/riseclipse/iec61850/nsd/impl/LNClassImpl.java