feature_flag_test

	A	B	C	D
1	Key	Layer	Value	Weight (sum to 1000 per layer)
2	my_key	a	foo	250
3	my_key	a	bar	750
4	my_other_key	b	foo	400
5	my_other_key	b	bar	100
6	overlapping_key	b	baz	10
7	overlapping_key	b	car	10
8	overlapping_key	b	dag	480
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