Constant mailjet_rs::v3::PUSHING_RECIPIENTS_WITH_RECEIVERS_ERROR_MESSAGE

pub const PUSHING_RECIPIENTS_WITH_RECEIVERS_ERROR_MESSAGE: &str = "Attempt to define `Recipients` fields with any of `To`, `Cc` and `Bcc` already defined. You must either define one or the other";

Error message to panic with when pushing to the Recipients vector when receivers (To, Cc, Bcc) has been defined