def _filter_options(self, aliases=True, comments=True, historical=True):
options = []<EOL>if not aliases:<EOL><INDENT>options.append('<STR_LIT>')<EOL><DEDENT>if not comments:<EOL><INDENT>options.append('<STR_LIT>')<EOL><DEDENT>if not historical:<EOL><INDENT>options.append('<STR_LIT>')<EOL><DEDENT>return options<EOL>
Converts a set of boolean-valued options into the relevant HTTP values.