public Builder withCommandLineConnector(Map<String, String> connectorConfig) {
            this.connectorConfigs.add(connectorConfig);
            return this;
        }
Start a standalone embedded connect worker. Internally, this class will spin up a Kafka cluster,
set up any tmp directories. and clean them up on exit. Methods on the same
{@code EmbeddedConnectStandalone} are not guaranteed to be thread-safe.
connect/runtime/src/test/java/org/apache/kafka/connect/util/clusters/EmbeddedConnectStandalone.java