44 int main(
int argc, 
char **argv){
    45   ros::init(argc, argv, 
"pointcloud_to_laserscan_node");
    47   int concurrency_level;
    48   private_nh.
param<
int>(
"concurrency_level", concurrency_level, 0);
    54   nodelet.load(nodelet_name, 
"pointcloud_to_laserscan/pointcloud_to_laserscan_nodelet", remap, nargv);
    57   if(concurrency_level) {
 int main(int argc, char **argv)
ROSCPP_DECL void init(int &argc, char **argv, const std::string &name, uint32_t options=0)
ROSCPP_DECL const std::string & getName()
ROSCPP_DECL const M_string & getRemappings()
ROSCPP_DECL std::string remap(const std::string &name)
bool param(const std::string ¶m_name, T ¶m_val, const T &default_val) const 
std::vector< std::string > V_string
std::map< std::string, std::string > M_string