feat: ability to create the real request out of generic request

Author: nergal-perm

pom.xml

@@ -25,11 +25,7 @@
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>com.jcabi</groupId>
-            <artifactId>jcabi-matchers</artifactId>
-            <scope>test</scope>
+            <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>org.assertj</groupId>

src/main/java/ewc/utilities/testableio/core/GenericRequest.java

@@ -83,4 +83,15 @@ public String clientId() {
     public String queryId() {
         return this.query.apply(this);
     }
+
+    /**
+     * Returns the request in the form that is required by the outside system and the real adapter.
+     *
+     * @param transformer Function that transform the generic request into the real request.
+     * @param <R> The type of the real request.
+     * @return The real request object, i.e. {@code HttpRequestEntity}.
+     */
+    public <R> R realRequest(final Function<GenericRequest<T>, R> transformer) {
+        return transformer.apply(this);
+    }
 }