Update an actor.

The actor's unique identifier in the specification, used to refer to it from test cases. Skip this if no update should be made.

The actor's display name. Skip this if no update should be made.

The actor's description. Skip this if no update should be made or provide as an empty string to remove the current value.

The actor's additional metadata for XML reports.

Whether the actor should be considered as the default choice for new conformance statements within its specification. Skip this if no update should be made.

Whether the actor should be hidden. Skip this if no update should be made.

The actor's display order relative to other actors when presented in test execution diagrams. Skip this if no update should be made or set to a negative value to remove the ordering altogether.