class Faraday::RackBuilder
def insert(index, *args, &block)
def insert(index, *args, &block) ed t_index(index) f.class::Handler.new(*args, &block) ert(index, handler)
def insert(index, *args, &block) ed t_index(index) f.class::Handler.new(*args, &block) ert(index, handler)