Member Nodes

looking at the obsoletion chains of objects on gstore, it appears that the obsoletedBy field is continually updated to point to the "head revision", making the chain non linear.
Although this is an interesting way to do things, the chains should be linear (linked-list style) so that they are traversable in both directions.

output from an exhaustive navigation of objects on gstore shows:

output format: ( predecessor <- identifier -> successor )
or: ( obsoletes <- identifier -> obsoletedBy )
( 0de5c03a-bffb-4030-9e47-19bfea24c916 <- 1f92e8cc-38a4-4946-843f-91a0899e8564 -> )
( 5625e3e6-918a-4201-add0-b5ab7643e8e4 <- 0de5c03a-bffb-4030-9e47-19bfea24c916 -> 1f92e8cc-38a4-4946-843f-91a0899e8564 )
( <- 5625e3e6-918a-4201-add0-b5ab7643e8e4 -> 1f92e8cc-38a4-4946-843f-91a0899e8564 )
( 71fd14aa-8c7e-4e89-a3f3-1df2a011db2a <- 62140ca7-2ad7-42b3-a447-c3a2e539fea6 -> )
( 08d2c688-19fd-4cd5-88ff-4ed76bf40332 <- 71fd14aa-8c7e-4e89-a3f3-1df2a011db2a -> 62140ca7-2ad7-42b3-a447-c3a2e539fea6 )
( <- 08d2c688-19fd-4cd5-88ff-4ed76bf40332 -> 62140ca7-2ad7-42b3-a447-c3a2e539fea6 )
( f43d50cc-48c6-4167-93f0-358ad5950c03 <- 410b8ca2-d546-4a23-9fa5-2adab61dcce6 -> )
( 4266e0b9-695c-4347-973d-980f9292831f <- f43d50cc-48c6-4167-93f0-358ad5950c03 -> 410b8ca2-d546-4a23-9fa5-2adab61dcce6 )
( 67651afa-5bef-47ca-bcc1-dacfd58def5e <- 4266e0b9-695c-4347-973d-980f9292831f -> 410b8ca2-d546-4a23-9fa5-2adab61dcce6 )
( b56bdc95-e6ae-4bbc-83ec-89d04a6ad2ca <- 67651afa-5bef-47ca-bcc1-dacfd58def5e -> 410b8ca2-d546-4a23-9fa5-2adab61dcce6 )
( <- b56bdc95-e6ae-4bbc-83ec-89d04a6ad2ca -> 410b8ca2-d546-4a23-9fa5-2adab61dcce6 )
( 5aa510a2-7a62-4c5d-bbf9-7e6a0487a884 <- f0e031e6-3771-44dd-ae8c-de12359d9f1b -> )
( 5cace783-3117-4d1b-ac91-c493b60ce1fc <- 5aa510a2-7a62-4c5d-bbf9-7e6a0487a884 -> f0e031e6-3771-44dd-ae8c-de12359d9f1b )
( <- 5cace783-3117-4d1b-ac91-c493b60ce1fc -> f0e031e6-3771-44dd-ae8c-de12359d9f1b )
( 11db53d0-2137-46fa-ac84-4d760c3f4a53 <- fee26dd1-3bb3-4d36-a682-e7e70202bbfb -> )
( 0f87ff38-98d8-4165-aef8-f9897d083051 <- 11db53d0-2137-46fa-ac84-4d760c3f4a53 -> fee26dd1-3bb3-4d36-a682-e7e70202bbfb )
( 3ca95a21-1536-4610-8fbb-721dfa35dcbe <- 0f87ff38-98d8-4165-aef8-f9897d083051 -> fee26dd1-3bb3-4d36-a682-e7e70202bbfb )
( <- 3ca95a21-1536-4610-8fbb-721dfa35dcbe -> fee26dd1-3bb3-4d36-a682-e7e70202bbfb )
( 610eb76c-4bea-496d-bbd5-a0afc70f6c9b <- ff54d33c-38a6-4158-a7cb-a7974a91b480 -> )
( f23fbc28-8fda-45da-b201-bb8c584fb273 <- 610eb76c-4bea-496d-bbd5-a0afc70f6c9b -> ff54d33c-38a6-4158-a7cb-a7974a91b480 )
( <- f23fbc28-8fda-45da-b201-bb8c584fb273 -> ff54d33c-38a6-4158-a7cb-a7974a91b480 )
( d603678d-d39a-4f3d-bdcf-1a4036ffd6fc <- d73cfb5c-9e86-42c4-aaad-93d80d7c41d3 -> )
( ede10a3a-28b7-4ea7-b97c-7d062b6ed738 <- d603678d-d39a-4f3d-bdcf-1a4036ffd6fc -> d73cfb5c-9e86-42c4-aaad-93d80d7c41d3 )
( 04e97c3f-ea45-4cc0-b26a-112de0c874f5 <- ede10a3a-28b7-4ea7-b97c-7d062b6ed738 -> d73cfb5c-9e86-42c4-aaad-93d80d7c41d3 )
( <- 04e97c3f-ea45-4cc0-b26a-112de0c874f5 -> d73cfb5c-9e86-42c4-aaad-93d80d7c41d3 )
( aaa76ac7-187a-4597-a580-5b4801276587 <- f9e807c3-5d09-4640-8610-19915d2e60e1 -> )
( 63ac3b8c-85bb-481c-8d47-989ee2124e6b <- aaa76ac7-187a-4597-a580-5b4801276587 -> f9e807c3-5d09-4640-8610-19915d2e60e1 )
( <- 63ac3b8c-85bb-481c-8d47-989ee2124e6b -> f9e807c3-5d09-4640-8610-19915d2e60e1 )
( f1165623-189c-4dba-8025-83915b34683b <- a80302f0-fd10-4743-b609-c6092d9c68c7 -> )
( 721c281a-b88d-4403-9882-778f1c7e8744 <- f1165623-189c-4dba-8025-83915b34683b -> a80302f0-fd10-4743-b609-c6092d9c68c7 )
( <- 721c281a-b88d-4403-9882-778f1c7e8744 -> a80302f0-fd10-4743-b609-c6092d9c68c7 )