clone(){return new this.constructor();}
canAddDiagnostic(otherDiagnostic){return false;}
addDiagnostic(otherDiagnostic){throw new Error('Abstract virtual method: subclasses must override '+'this method if they override canAddDiagnostic');}
get guid(){if(this.guid_===undefined){this.guid_=tr.b.GUID.allocateUUID4();}
return this.guid_;}

Works shall not include works that contain only declarations,
interfaces, types, classes, structures, or files of the Program solely
in each case in order to link to, bind by name, or subclass the Program
or Modified Works thereof.

"Distribute" means the acts of a) distributing or b) making available
in any manner that enables the transfer of a copy.