[#44187261] Modified return value of TransferTubesToTubes

Also corrected camel case method name to snake case
[#44187261] Removes duplicate elements
[#44187261] Use uniq instead of uniq!
[#44187261] Simplified the code
Merge pull request #121 from ke4/44187261_correct_transfertubestotubes_action_s_return_type

44187261 correct transfertubestotubes action s return type