override toString method in envelopes to invoke delegate's ones

Author: RoRoche

archunit/src/main/java/com/tngtech/archunit/library/adr/envelopes/AdrEnvelope.java

@@ -130,4 +130,10 @@ public Optional<String> moreInformation() {
     public Adr withMoreInformation(final String moreInformation) {
         return this.delegate.withMoreInformation(moreInformation);
     }
+
+    @PublicAPI(usage = ACCESS)
+    @Override
+    public String toString() {
+        return this.delegate.toString();
+    }
 }

archunit/src/main/java/com/tngtech/archunit/library/adr/envelopes/MetadataEnvelope.java

@@ -92,4 +92,10 @@ public Optional<List<String>> informed() {
     public Metadata withInformed(final List<String> informed) {
         return this.delegate.withInformed(informed);
     }
+
+    @PublicAPI(usage = ACCESS)
+    @Override
+    public String toString() {
+        return this.delegate.toString();
+    }
 }

archunit/src/main/java/com/tngtech/archunit/library/adr/envelopes/OptionProsAndConsEnvelope.java

@@ -68,4 +68,10 @@ public OptionProsAndCons withExample(final String example) {
     public List<String> prosAndCons() {
         return this.delegate.prosAndCons();
     }
+
+    @PublicAPI(usage = ACCESS)
+    @Override
+    public String toString() {
+        return this.delegate.toString();
+    }
 }