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Update readme to use spawn cli tool
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‎README.md‎

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@@ -48,204 +48,25 @@ For more information consult the main repository [documentation](https://github.
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## Getting Started
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First we must create a new Java project. In this example we will use [Maven](https://maven.apache.org/) as our package manager.
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First we must need to install spawn cli tool to create a new Java project.
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```shell
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mvn archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4
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curl -sSL https://github.com/eigr/spawn/releases/download/v1.4.2/install.sh | sh
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```
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Now you will need to fill in the data for groupId, artifactId, version, and package.
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Let's call our maven artifact spawn-java-demo. The output of this command will be similar to the output below
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```shell
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$ mvn archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4
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[INFO] Scanning for projects...
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[INFO] Generating project in Interactive mode
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[INFO] Archetype repository not defined. Using the one from [org.apache.maven.archetypes:maven-archetype-quickstart:1.4] found in catalog remote
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Define value for property 'groupId': io.eigr.spawn
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Define value for property 'artifactId': spawn-java-demo
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Define value for property 'version' 1.0-SNAPSHOT: :
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Define value for property 'package' io.eigr.spawn: : io.eigr.spawn.java.demo
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Confirm properties configuration:
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groupId: io.eigr.spawn
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artifactId: spawn-java-demo
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version: 1.0-SNAPSHOT
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package: io.eigr.spawn.java.demo
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Y: : y
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[INFO] ----------------------------------------------------------------------------
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[INFO] Using following parameters for creating project from Archetype: maven-archetype-quickstart:1.4
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[INFO] ----------------------------------------------------------------------------
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[INFO] Parameter: groupId, Value: io.eigr.spawn
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[INFO] Parameter: artifactId, Value: spawn-java-demo
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[INFO] Parameter: version, Value: 1.0-SNAPSHOT
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[INFO] Parameter: package, Value: io.eigr.spawn.java.demo
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[INFO] Parameter: packageInPathFormat, Value: io/eigr/spawn/java/demo
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[INFO] Parameter: package, Value: io.eigr.spawn.java.demo
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[INFO] Parameter: groupId, Value: io.eigr.spawn
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[INFO] Parameter: artifactId, Value: spawn-java-demo
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[INFO] Parameter: version, Value: 1.0-SNAPSHOT
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[INFO] Project created from Archetype in dir: /home/sleipnir/workspaces/eigr/spawn-java-demo
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[INFO] ------------------------------------------------------------------------
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[INFO] BUILD SUCCESS
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[INFO] ------------------------------------------------------------------------
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[INFO] Total time: 01:39 min
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[INFO] Finished at: 2023-08-28T11:37:57-03:00
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[INFO] ------------------------------------------------------------------------
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```
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The second thing we have to do is add the spawn dependency to the project.
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```xml
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<dependency>
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<groupId>com.github.eigr</groupId>
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<artifactId>spawn-java-std-sdk</artifactId>
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<version>v1.3.1</version>
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</dependency>
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```
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We're also going to configure a few things for our application build to work, including compiling the protobuf files.
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See below a full example of the pom.xml file:
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```xml
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>io.eigr.spawn</groupId>
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<artifactId>spawn-java-demo</artifactId>
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<packaging>jar</packaging>
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<version>1.0-SNAPSHOT</version>
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<name>spawn-java-demo</name>
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<url>https://eigr.io</url>
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<properties>
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<maven.compiler.source>11</maven.compiler.source>
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<maven.compiler.target>11</maven.compiler.target>
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<project.encoding>UTF-8</project.encoding>
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</properties>
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<repositories>
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<repository>
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<id>jitpack.io</id>
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<url>https://jitpack.io</url>
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</repository>
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</repositories>
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<dependencies>
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<dependency>
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<groupId>com.github.eigr</groupId>
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<artifactId>spawn-java-std-sdk</artifactId>
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<version>v1.3.1</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-classic</artifactId>
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<version>1.4.7</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.13.2</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<extensions>
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<extension>
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<groupId>kr.motd.maven</groupId>
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<artifactId>os-maven-plugin</artifactId>
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<version>1.6.2</version>
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</extension>
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</extensions>
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<!-- make jar runnable -->
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<executions>
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<execution>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<shadedArtifactAttached>true</shadedArtifactAttached>
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<transformers>
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<transformer implementation=
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"org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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<mainClass>io.eigr.spawn.java.demo.App</mainClass>
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</transformer>
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</transformers>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>2.7</version>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>11</source>
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<target>11</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.xolstice.maven.plugins</groupId>
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<artifactId>protobuf-maven-plugin</artifactId>
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<version>0.6.1</version>
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<configuration>
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<protocArtifact>com.google.protobuf:protoc:3.19.2:exe:${os.detected.classifier}</protocArtifact>
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<pluginId>grpc-java</pluginId>
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<pluginArtifact>io.grpc:protoc-gen-grpc-java:1.47.0:exe:${os.detected.classifier}</pluginArtifact>
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</configuration>
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<executions>
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<execution>
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<goals>
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<goal>compile</goal>
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<goal>compile-custom</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>build-helper-maven-plugin</artifactId>
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<version>3.2.0</version>
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<executions>
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<execution>
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<id>add-test-sources</id>
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<phase>generate-test-sources</phase>
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<goals>
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<goal>add-test-source</goal>
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</goals>
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<configuration>
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<sources>
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<source>${project.build.directory}/generated-test-sources/protobuf</source>
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</sources>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>
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```shell
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spawn new java hello_world --group-id=io.eigr.spawn --artifact-id=spawn-java-demo --version=1.0.0 --package=io.eigr.spawn.java.demo
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```
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Now it is necessary to download the dependencies via Maven:
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```shell
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cd spawn-java-demo && mvn install
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```
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So far it's all pretty boring and not really Spawn related, so it's time to start playing for real.
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The first thing we're going to do is define a place to put our protobuf files. In the root of the project we will create
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a folder called protobuf and some sub folders
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```shell
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mkdir -p src/main/proto/domain
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```
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That done, let's create our protobuf file inside the example folder.
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The first thing we're going to do is define a place to put our protobuf files.
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```shell
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touch src/main/proto/domain/domain.proto

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