Update docs

- Relates to #194

spring-statemachine-core/src/test/java/org/springframework/statemachine/docs/DocsConfigurationSampleTests8.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.statemachine.docs;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.statemachine.config.EnableStateMachine;
+import org.springframework.statemachine.config.StateMachineConfigurerAdapter;
+import org.springframework.statemachine.config.builders.StateMachineModelConfigurer;
+import org.springframework.statemachine.config.model.ConfigurationData;
+import org.springframework.statemachine.config.model.DefaultStateMachineModel;
+import org.springframework.statemachine.config.model.StateData;
+import org.springframework.statemachine.config.model.StateMachineModel;
+import org.springframework.statemachine.config.model.StateMachineModelFactory;
+import org.springframework.statemachine.config.model.StatesData;
+import org.springframework.statemachine.config.model.TransitionData;
+import org.springframework.statemachine.config.model.TransitionsData;
+
+public class DocsConfigurationSampleTests8 {
+
+// tag::snippetA[]
+	@Configuration
+	@EnableStateMachine
+	public static class Config1 extends StateMachineConfigurerAdapter<String, String> {
+
+		@Override
+		public void configure(StateMachineModelConfigurer<String, String> model) throws Exception {
+			model
+				.withModel()
+					.factory(modelFactory());
+		}
+
+		@Bean
+		public StateMachineModelFactory<String, String> modelFactory() {
+			return new CustomStateMachineModelFactory();
+		}
+	}
+// end::snippetA[]
+
+// tag::snippetB[]
+	public static class CustomStateMachineModelFactory implements StateMachineModelFactory<String, String> {
+
+		@Override
+		public StateMachineModel<String, String> build() {
+			ConfigurationData<String, String> configurationData = new ConfigurationData<>();
+			Collection<StateData<String, String>> stateData = new ArrayList<>();
+			stateData.add(new StateData<String, String>("S1", true));
+			stateData.add(new StateData<String, String>("S2"));
+			StatesData<String, String> statesData = new StatesData<>(stateData);
+			Collection<TransitionData<String, String>> transitionData = new ArrayList<>();
+			transitionData.add(new TransitionData<String, String>("S1", "S2", "E1"));
+			TransitionsData<String, String> transitionsData = new TransitionsData<>(transitionData);
+			StateMachineModel<String, String> stateMachineModel = new DefaultStateMachineModel<String, String>(configurationData,
+					statesData, transitionsData);
+			return stateMachineModel;
+		}
+	}
+// end::snippetB[]
+}