/**
* @param function
* @return the Definition object for the function.
*/
private Definition getFunctionDefinition(Node function) {
DefinitionSite definitionSite = defFinder.getDefinitionForFunction(function);
Preconditions.checkNotNull(definitionSite);
Definition definition = definitionSite.definition;
Preconditions.checkState(!definitionSite.inExterns);
Preconditions.checkState(definition.getRValue() == function);
return definition;
}
