ot::Array::PushBack() method
Appends a new entry to the end of the array. The method uses assignment `=` operator on `Type` to copy @p aEntry into the added array element.
Arguments
aEntry
The new entry to push back.
Return value
kErrorNone Successfully pushed back @p aEntry to the end of the array. kErrorNoBufs Could not append the new element since array is full.