load

Returns all versions between the fromVersions and a common version. The common version may be identified by baseVersionHash. If no baseVersionHash is given, the common version wile be the first version aka the version without a CLVersion.baseVersion.

The order also ensures three properties:

1. The versions are ordered topologically starting with the versions without parents.

2. The order is also "monotonic". This means adding a version to the set of all versions will never change the order of versions that were previously in the history. For example, given versions 1, 2 and 3: If 1 and 2 are ordered as (1, 2), ordering 1, 2 and 3 will never produce (2, 3, 1). 3 can come anywhere (respecting the topological ordering), but 2 has to come after 1.

3. "Close versions are kept together" Formally: A version that has only one child (ignoring) should always come before the child. Example: 1 <- 2 <- 3 and 1 <- x, then 1, 2, 4, 3 is not allowed, because 3 is the only child of 2. Valid orders would be (1, x, 3, 4) and (1, x, 2, 3) This is relevant for UnduOp and RedoOp. See UndoTest.