void (@NotNull PsiClassType type, @NotNull Collection<? super String> suggestions) { PsiType componentType = PsiUtil.extractIterableTypeParameter(type, false); if (componentType == null || componentType.equals(type)) { return; } String typeName = normalizeTypeName(getTypeName(componentType)); if (typeName != null) { suggestions.add(StringUtil.pluralize(typeName)); } }