src/main/java/software/amazon/encryption/s3/S3AsyncEncryptionClient.java [790:802]:
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            if (!onlyOneNonNull(_cryptoMaterialsManager, _keyring, _aesKey, _rsaKeyPair, _kmsKeyId)) {
                throw new S3EncryptionClientException("Exactly one must be set of: crypto materials manager, keyring, AES key, RSA key pair, KMS key id");
            }

            if (_bufferSize >= 0) {
                if (_enableDelayedAuthenticationMode) {
                    throw new S3EncryptionClientException("Buffer size cannot be set when delayed authentication mode is enabled");
                }
            } else {
                _bufferSize = DEFAULT_BUFFER_SIZE_BYTES;
            }

            if (_wrappedClient == null) {
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src/main/java/software/amazon/encryption/s3/S3EncryptionClient.java [1070:1082]:
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            if (!onlyOneNonNull(_cryptoMaterialsManager, _keyring, _aesKey, _rsaKeyPair, _kmsKeyId)) {
                throw new S3EncryptionClientException("Exactly one must be set of: crypto materials manager, keyring, AES key, RSA key pair, KMS key id");
            }

            if (_bufferSize >= 0) {
                if (_enableDelayedAuthenticationMode) {
                    throw new S3EncryptionClientException("Buffer size cannot be set when delayed authentication mode is enabled");
                }
            } else {
                _bufferSize = DEFAULT_BUFFER_SIZE_BYTES;
            }

            if (_wrappedClient == null) {
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