@java.lang.Override
          public ExecutionsFutureStub newStub(
              io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
            return new ExecutionsFutureStub(channel, callOptions);
          }
Creates a new ListenableFuture-style stub that supports unary calls on the service
java-workflow-executions/grpc-google-cloud-workflow-executions-v1beta/src/main/java/com/google/cloud/workflows/executions/v1beta/ExecutionsGrpc.java