test_class.declarator: factory = new ConcatStageFactory()
test_class.modifier: private final
test_class.original_string: private final ConcatStageFactory factory = new ConcatStageFactory();
test_class.type: ConcatStageFactory
test_class.var_name: factory
test_class.file: implementation/src/test/java/io/smallrye/reactive/streams/stages/ConcatStageFactoryTest.java
test_class.identifier: ConcatStageFactoryTest
test_class.superclass: extends StageTestBase
test_case.body: @Test(expected = NullPointerException.class)
      public void testWithoutAStage() {
          factory.create(new Engine(), null);
      }
test_case.class_method_signature: ConcatStageFactoryTest.testWithoutAStage()
test_case.full_signature: @Test(expected = NullPointerException.class) public void testWithoutAStage()
test_case.identifier: testWithoutAStage
test_case.invocations: create
test_case.modifiers: @Test(expected = NullPointerException.class) public
test_case.parameters: ()
test_case.return: void
test_case.signature: void testWithoutAStage()
focal_class.file: implementation/src/main/java/io/smallrye/reactive/streams/stages/ConcatStageFactory.java
focal_class.identifier: ConcatStageFactory
focal_class.interfaces: implements PublisherStageFactory<Stage.Concat>
focal_class.class_method_signature: ConcatStageFactory.create(Engine engine, Stage.Concat stage)
focal_class.full_signature: @Override public PublisherStage<O> create(Engine engine, Stage.Concat stage)
focal_class.identifier: create
focal_class.modifiers: @Override public
focal_class.parameters: (Engine engine, Stage.Concat stage)
focal_class.return: PublisherStage<O>
focal_class.signature: PublisherStage<O> create(Engine engine, Stage.Concat stage)
focal_method.body: @Override
      public <O> PublisherStage<O> create(Engine engine, Stage.Concat stage) {
          Objects.requireNonNull(engine);
          Objects.requireNonNull(stage);
          Graph g1 = stage.getFirst();
          Graph g2 = stage.getSecond();
          return new ConcatStage<>(engine, g1, g2);
      }
focal_method.class_method_signature: ConcatStageFactory.create(Engine engine, Stage.Concat stage)
focal_method.full_signature: @Override public PublisherStage<O> create(Engine engine, Stage.Concat stage)
focal_method.identifier: create
focal_method.invocations: requireNonNull requireNonNull getFirst getSecond
focal_method.modifiers: @Override public
focal_method.parameters: (Engine engine, Stage.Concat stage)
focal_method.return: PublisherStage<O>
focal_method.signature: PublisherStage<O> create(Engine engine, Stage.Concat stage)