Service-Client.md

-s
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+# What is the Service Client?
+
+The service client is a template for an asynchronous restful communications api which allows us to communicate with the main FreshmanRPG project. It takes in a String called `baseURL` which tells it which server to target. It also has two type definitions called JSON and HEADER. `JSON` is an alias for `Map<String, dynamic>` and `HEADER` is an alias for `Map<String, String>`.
+
+```dart
+abstract class ServiceClient {
+  final String baseURL;
+
+  const ServiceClient({
+    required this.baseURL,
+  });
+
+  ///
+  /// Template for a get method.
+  ///
+  Future<JSON> get({
+    required String endpoint,
+    HEADER? headers,
+  });
+
+  ///
+  /// Template for a post method.
+  ///
+  Future<JSON> post({
+    required String endpoint,
+    HEADER? headers,
+    required JSON body,
+  });
+}
+```
+
+For more information about restful apis, check [here](https://www.restapitutorial.com/lessons/httpmethods.html).
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