from _html import not_body_rate
from _html import extract


# we expect you to override in response to necessary.
# but need customize not necessarily.
def is_collection_of_links(block):
    # whether this layout block is a collection of links.
    print "currently not used"


from cluster import not_body_rate
from extractor import extract


# we expect you to override in response to necessary.
# but need customize not necessarily.
def is_collection_of_links(block):
    # whether this layout block is a collection of links.
    print "currently not used"


fix TravisCI build failing