Delete approval request

Get an approval request by approval request ID. ### Expanding approval response LaunchDarkly supports the `expand` query param to include additional fields in the response, with the following fields: - `environments` includes the environments the approval request relates to - `flag` includes the flag the approval request belongs to - `project` includes the project the approval request belongs to - `resource` includes details on the resource (flag or segment) the approval request relates to For example, `expand=project,flag` includes the `project` and `flag` fields in the response.