default ListConsumerGroupOffsetsResult listConsumerGroupOffsets(Map<String, ListConsumerGroupOffsetsSpec> groupSpecs) {
        return listConsumerGroupOffsets(groupSpecs, new ListConsumerGroupOffsetsOptions());
    }
List the consumer group offsets available in the cluster for the specified groups with the default options.
<p>
This is a convenience method for
{@link #listConsumerGroupOffsets(Map, ListConsumerGroupOffsetsOptions)} with default options.

@param groupSpecs Map of consumer group ids to a spec that specifies the topic partitions of the group to list offsets for.
@return The ListConsumerGroupOffsetsResult.
clients/src/main/java/org/apache/kafka/clients/admin/Admin.java