}
        }
        return Optional.fromNullable(count);
    }

    public Optional<Integer> getMaxErrorRetryCount() {
        return maxErrorRetryCount;
    }

    public long getPartSize() {
        return partSize;
    }

    public long getMultipartThreshold() {
        return partSize * 2;
    }

                clientConfiguration.setProxyPassword(credentials.getPassword());
            }
        }
        Optional<Integer> maxErrorRetryCount = s3ConnectionProperties.getMaxErrorRetryCount();
        if (maxErrorRetryCount.isPresent()) {
            clientConfiguration.setMaxErrorRetry(maxErrorRetryCount.get());
        }
        return clientConfiguration;
    }

        s3Properties.getProxy() >> Optional.of(new HttpProxySettings.HttpProxy("localhost", 8080, 'username', 'password'))
        s3Properties.getEndpoint() >> Optional.absent()
        s3Properties.getMaxErrorRetryCount() >> Optional.absent()
        when:
        S3Client s3Client = new S3Client(credentials(), s3Properties)

        then:
        s3Client.amazonS3Client.clientConfiguration.proxyHost == 'localhost'

        S3ConnectionProperties s3SystemProperties = Mock {
            getEndpoint() >> Optional.of(server.uri)
            getProxy() >> Optional.fromNullable(null)
            getMaxErrorRetryCount() >> Optional.absent()
            getPartSize() >> 512
            getMultipartThreshold() >> 1024
        }

        S3Client s3Client = new S3Client(authenticationImpl, s3SystemProperties)

        when: