Communication amend test.

src/main/java/net/gepafin/tendermanagement/model/request/CommunicationRequestBean.java

@@ -0,0 +1,11 @@
+package net.gepafin.tendermanagement.model.request;
+
+import lombok.Data;
+
+@Data
+public class CommunicationRequestBean {
+    private String title;
+    private String comment;
+    private Long amendmentId;
+}
+

src/main/java/net/gepafin/tendermanagement/model/response/CommunicationResponseBean.java

@@ -0,0 +1,11 @@
+package net.gepafin.tendermanagement.model.response;
+
+import lombok.Data;
+
+import java.time.Instant;
+
+@Data
+public class CommunicationResponseBean {
+    private Instant communicationAddedDate;
+    private String comment;
+}