default AlterPartitionReassignmentsResult alterPartitionReassignments(
        Map<TopicPartition, Optional<NewPartitionReassignment>> reassignments) {
        return alterPartitionReassignments(reassignments, new AlterPartitionReassignmentsOptions());
    }
Change the reassignments for one or more partitions.
Providing an empty Optional (e.g via {@link Optional#empty()}) will <bold>revert</bold> the reassignment for the associated partition.

This is a convenience method for {@link #alterPartitionReassignments(Map, AlterPartitionReassignmentsOptions)}
with default options.  See the overload for more details.
clients/src/main/java/org/apache/kafka/clients/admin/Admin.java