@property<EOL><INDENT>def implied_columns(self):<DEDENT>
warn_implied_cols()<EOL>try:<EOL><INDENT>return self.implied_attributes<EOL><DEDENT>except AttributeError:<EOL><INDENT>return PathExAttMap()<EOL><DEDENT>
Collection of sample attributes for which value of each is implied by other(s)

:return list[str]: sample attribute names for which value is implied by other(s)