code: public EmbeddedMongoDB start() {
          if (!this.active) {
              try {
                  this.mongodProcess = MongodStarter.getDefaultInstance().prepare(new MongodConfigBuilder()
                  .version(this.version)
                  .net(new Net(this.host, this.port, false))
                  .build()).start();
  
                  this.active = true;
                  LOG.info("Successfully started EmbeddedMongoDB @ {}:{}", this.host, this.port);
              } catch (final IOException e) {
                  LOG.error("Failed to start EmbeddedMongoDB @ {}:{}", this.host, this.port, e);
              }
          }
          
          return this;
      }
docs: Starts the EmbeddedMongoDB instance
  @return EmbeddedMongoDB instance