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AMQPEnvelope::isRedelivery — Whether this is a redelivery of the message
Whether this is a redelivery of a message. If this message has been delivered and AMQPEnvelope::nack() was called, the message will be put back on the queue to be redelivered, at which point the message will always return
TRUE when this method is called.
This function has no parameters.
TRUE if this is a redelivery,