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#include <pcl_communication_structs.h>
Every interface has to feature this tag (at least indirectly - by tag-derivation). This tag simply says that one may iterate over the elements of the interface.
Additionally you may receive the local_src_id. This id represents the sender during local communication (communication on one process only). Values < 0 mark the sender as invalid (during local communication). The src-id is ignored during parallel communication. Instead pcl::ProcRank is used.
typedefs that have to be featured in such interfaces:
Methods that have to be featured in such interfaces: