In which scenarios we should use is_sample_valid()

[jack0622]

In the file include/fastdds/dds/subscriber/DataReader.hpp, it shows is_sample_valid() is used to check whether a loaned sample is still valid or is corrupted. But in the case test/profiling/allocations/AllocTestSubscriber.cpp, is_sample_valid() is used to check samples not loaned as well. So In which scenarios we should use is_sample_valid()

[yaseiva]

Best Practice:
Always call is_sample_valid() before processing any sample—loaned or not.
It is the way in Fast-DDS to ensure that a sample is trustworthy and safe to use.