# Functions
PathsRename iterates over all columns of the incoming row in order and renames them.
Set returns a SetOperator that sets the value of a column or nested field in the current row.
Unset returns a UnsetOperator that unsets the value of a column in the current row.
# Structs
An RenameOperator iterates over all columns of the incoming row in order and renames them.
A SetOperator sets the value of a column or nested field in the current row.
A UnsetOperator unsets the value of a column in the current row.