docs: public RunInstancesRequest withElasticGpuSpecification(ElasticGpuSpecification... elasticGpuSpecification) {
          if (this.elasticGpuSpecification == null) {
              setElasticGpuSpecification(new com.amazonaws.internal.SdkInternalList<ElasticGpuSpecification>(elasticGpuSpecification.length));
          }
          for (ElasticGpuSpecification ele : elasticGpuSpecification) {
              this.elasticGpuSpecification.add(ele);
          }
          return this;
      }