append a new Cell
all the cells
execute all cells
execute the row
execute the row
a new Row with executed cells
a Row where every cell is executed with a Failure
a Row where every cell is executed with a Pending
a Row where every cell is executed with a specified Result
a Row where every cell is executed with a Skipped
a Row where every cell is executed with a Success
print the row with a padding space size to use for each cell, given cell by cell
A Row is a non-empty list of Cells
A Row can be executed by executing each Cell and collecting the results.