code: public RiakNode setMinConnections(int minConnections)
      {
          stateCheck(State.CREATED, State.RUNNING, State.HEALTH_CHECKING);
          if (minConnections <= getMaxConnections())
          {
              this.minConnections = minConnections;
          }
          else
          {
              throw new IllegalArgumentException("Min connections greater than max connections");
          }
          // TODO: Start / reap delta?
          return this;
      }
docs: Sets the minimum number of active connections to be maintained.
  
  @param minConnections the minConnections to set
  @return a reference to this RiakNode
  @see Builder#withMinConnections(int)