ColumnMetadataChange
Describes how a single column's metadata changed between two versions.
values holds the new title, unit and tags for the column. If the column was also moved
between groups, the from_group* and to_group* fields record where it was before and after
the move: from_* refers to the parent version's group tree and to_* to the target version's.
When the column was not in a group on either side, that side's group UUID and path are simply
omitted.
Qualified path of the column's group before the move; omitted when previously ungrouped.
UUID of the column's group before the move; omitted when the column was previously ungrouped.
The original human-readable label used to identify the column
Qualified path of the column's group after the move; omitted when the column is now ungrouped.
UUID of the column's group after the move; omitted when the column is now ungrouped.
Replacement tags for the column. Omit or send null to leave the existing tags untouched; send {} to clear them; send a populated object to replace them wholesale. Publisher-supplied free-form metadata for the column, as a JSON object. Keys must be 1-100 chars and cannot contain leading whitespace or dot, or the characters / \ : > < | ? " *; keys are unique case-insensitively. Values may be any JSON-compatible type. A single tags object serialised as UTF-8 JSON must be at most 10 KiB.
The new human-readable label for the column
The new unit ID for the column
