The release of resources must be idempotent, meaning that discard() may be called after complete consumption of the body and it may also be called numerous times.
Examine whether the BodyReader may yield additional data.
Examine whether the BodyReader may yield additional data.
This may be a result of being discarded, failure, or deletion of the data stream.
Because BodyReader is async it is not, in general, possible to definitively determine if more data remains in the stream. Therefore, the contract of this method is that a return value of true guarantees that no more data can be obtained from this BodyReader, but a return value of false does not guarantee more data.
The remainder of the message body will be accumulated into a single buffer. If no data remains, the ByteBuffer will be empty as defined by ByteBuffer.hasRemaining()