toString() will return a plain list of filters in the group (without '[]' parenthesis)

Author: redmitry

beacon-framework/src/main/java/es/bsc/inb/ga4gh/beacon/framework/model/v200/requests/BeaconQueryFilterGroup.java

@@ -27,6 +27,7 @@
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 /**
  * Logical 'OR' query filters group.
@@ -37,4 +38,9 @@
 public class BeaconQueryFilterGroup extends ArrayList<BeaconQueryFilter>
         implements List<BeaconQueryFilter>, BeaconQueryFilterGroupInterface {
 
+    @Override
+    public String toString() {
+        return this.stream().map(BeaconQueryFilterGroupInterface::toString)
+                .collect(Collectors.joining(", "));
+    }
 }