Prepare better docs structure

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

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+/*
+ * Copyright 2015 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.EnumSet;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.statemachine.AbstractStateMachineTests;
+import org.springframework.statemachine.config.EnableStateMachine;
+import org.springframework.statemachine.config.EnumStateMachineConfigurerAdapter;
+import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
+
+/**
+ * Tests for state machine configuration.
+ *
+ * @author Janne Valkealahti
+ *
+ */
+public class DocsConfigurationSampleTests extends AbstractStateMachineTests {
+
+// tag::snippetA[]
+	@Configuration
+	@EnableStateMachine
+	public static class Config1 extends EnumStateMachineConfigurerAdapter<MyStates, MyEvents> {
+
+		@Override
+		public void configure(StateMachineStateConfigurer<MyStates, MyEvents> states) throws Exception {
+			states
+				.withStates()
+					.initial(MyStates.S1)
+					.end(MyStates.SF)
+					.states(EnumSet.allOf(MyStates.class));
+		}
+
+	}
+// end::snippetA[]
+
+}

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

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+package org.springframework.statemachine.docs;
+
+//tag::snippetA[]
+public enum MyEvents {
+    E1,E2,E3,E4,EF
+}
+//end::snippetA[]

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

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+package org.springframework.statemachine.docs;
+
+//tag::snippetA[]
+public enum MyStates {
+    SI,S1,S2,S3,S4,SF
+}
+//end::snippetA[]