NodeUtil.getPrototypePropertyName(qName);
Name prototypeProp = graph.defineNameIfNotExists(qNameStr, isExtern);
Preconditions.checkNotNull(prototypeProp,
"%s should be in the name graph as a node.", qNameStr);
if (assign != null) {
prototypeProp.addAssignmentDeclaration(assign);
}
prototypeProp.setType(type);
return prototypeProp;
}