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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_header_align(self, array):
 """Set the desired header alignment - the elements of the array should be either "l", "c" or "r": * "l": column flushed left * "c": column centered * "r": column flushed right """


        self._check_row_size(array)
        self._header_align = array
        return self