@require(hierarchy, klass, children)
@if hierarchy:
@for i, parent in enumerate(hierarchy):
\
@if i != 0:
\
@for j in range (i * 4):
 \
@end
╰──\
@end
@parent
@end
@for j in range ((len(hierarchy)) * 4):
 \
@end
@end
╰──@klass.link.title
@for child in children:
\
@for j in range ((len(hierarchy) + 1) * 4):
 \
@end
╰──\
@child
@end