private static boolean isUppercaseVowel(char c) {
        return c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U';
    }
Validates that neighbors target resolvable shapes of the correct type.
smithy-model/src/main/java/software/amazon/smithy/model/validation/validators/TargetValidator.java