code: public void bindEip(String eip, String instanceId, String instanceType) {
          this.bindEip(new BindEipRequest().withEip(eip).withInstanceId(instanceId).withInstanceType(instanceType));
      }
docs: bind the eip to a specified instanceId and instanceType(BCC|BLB).
  @param eip eip address to be bound
  @param instanceId id of instance to be bound
  @param instanceType type of instance to be bound