private static void generateNamesForCollectionType( PsiType type, Set<String> possibleNames, NameValidator validator) { PsiType componentType = getCollectionComponentType(type, validator.getProject()); if (!(type instanceof PsiClassType) || componentType == null) return; PsiClass clazz = ((PsiClassType) type).resolve(); if (clazz == null) return; String collectionName = clazz.getName(); assert collectionName != null; String componentName = cleanTypeName(componentType.getPresentableText()); if (componentType instanceof PsiClassType) { PsiClassType classType = (PsiClassType) componentType; PsiClass psiClass = classType.resolve(); if (psiClass == null) return; componentName = psiClass.getName(); } assert componentName != null; String candidateName = StringUtil.pluralize(GroovyNamesUtil.fromLowerLetter(componentName)); generateCamelNames(possibleNames, validator, candidateName); ArrayList<String> camelizedName = GroovyNamesUtil.camelizeString(candidateName); candidateName = camelizedName.get(camelizedName.size() - 1); candidateName = collectionName.toLowerCase() + "Of" + fromUpperLetter(candidateName); possibleNames.add(validator.validateName(candidateName, true)); }