The set of values to which the operation applies as a JMESPath expression for evaluation against the context resource. An operation fails if the selection yields an exception, except as otherwise specified. Note that comparisons involving non-primitive values (objects or arrays) are not supported and will always evaluate to false.
A value to be merged into the target.
An operation that recursively updates items of the selection, or adding the value if the selection is empty. If the value is not an object, it is used directly, otherwise each key-value member is used to create or update a member of the same name in the target and the same process is applied recursively for each object-typed value (similar to RFC 7396 JSON Merge Patch, except that null values are copied rather than transformed into deletions). NOT_FOUND exceptions are handled by creating the implied containing structure. To avoid referential errors if an item's descendant is also in the selection, items of the selection are processed in order of decreasing depth.