def build_remap_symbols(self, name_generator, children_only=None):
replacement = name_generator(skip=(self._reserved_symbols))<EOL>self.remapped_symbols[self.catch_symbol] = next(replacement)<EOL>for child in self.children:<EOL><INDENT>child.build_remap_symbols(name_generator, False)<EOL><DEDENT>
The children_only flag is inapplicable, but this is included as
the Scope class is defined like so.

Here this simply just place the catch symbol with the next
replacement available.