feat(dart): extract method gen from requests template for guides

Author: Fluf22

templates/dart/tests/method.mustache

@@ -0,0 +1,23 @@
+client.{{method}}(
+{{#parametersWithDataType}}
+  {{> tests/request_param}}
+{{/parametersWithDataType}}
+{{#hasRequestOptions}}
+  requestOptions : RequestOptions(
+  {{#requestOptions.headers}}
+    headers: {
+    {{#parametersWithDataType}}
+      '{{{key}}}' : '{{value}}',
+    {{/parametersWithDataType}}
+    },
+  {{/requestOptions.headers}}
+  {{#requestOptions.queryParameters}}
+    urlParameters: {
+    {{#parametersWithDataType}}
+      '{{{key}}}' : {{> tests/param_value}},
+    {{/parametersWithDataType}}
+    },
+  {{/requestOptions.queryParameters}}
+  )
+{{/hasRequestOptions}}
+)

templates/dart/tests/requests/requests.mustache

@@ -19,29 +19,7 @@ void main() {
         {{/hasRegionalHost}}
         options: ClientOptions(requester: requester),
       ),
-      call: (client) => client.{{method}}(
-        {{#parametersWithDataType}}
-        {{> tests/request_param}}
-        {{/parametersWithDataType}}
-        {{#hasRequestOptions}}
-        requestOptions : RequestOptions(
-            {{#requestOptions.headers}}
-            headers: { 
-            {{#parametersWithDataType}}
-                '{{{key}}}' : '{{value}}',    
-            {{/parametersWithDataType}}
-            },
-            {{/requestOptions.headers}}
-            {{#requestOptions.queryParameters}}
-            urlParameters: {
-                {{#parametersWithDataType}}
-                '{{{key}}}' : {{> tests/param_value}},
-                {{/parametersWithDataType}}
-            },
-            {{/requestOptions.queryParameters}}
-        ),
-        {{/hasRequestOptions}}
-      ),
+      call: (client) => {{> method}},
       intercept: (request) {
         {{#request}}
         expectPath(request.path, '{{{path}}}');