public static void setStreamObjectNumSupplier(Supplier<Integer> streamObjectNumSupplier) {
        S3StreamKafkaMetricsManager.streamObjectNumSupplier = streamObjectNumSupplier;
    }
Parse the PEM formatted certificate content into an array of X509 certificates.

@param pemContent The PEM formatted certificate content.
@return An array of X509 certificates.
@throws CertificateException If there is an error parsing the certificates.
server-common/src/main/java/org/apache/kafka/server/metrics/s3stream/S3StreamKafkaMetricsManager.java