src/main/java/com/microsoft/azure/proton/transport/proxy/impl/ProxyImpl.java [241:252]:
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                if (tailClosed) {
                    return Transport.END_OF_STREAM;
                } else {
                    return inputBuffer.remaining();
                }
            } else {
                return underlyingInput.capacity();
            }
        }

        @Override
        public int position() {
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src/main/java/com/microsoft/azure/proton/transport/ws/impl/WebSocketImpl.java [418:429]:
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                if (tailClosed) {
                    return Transport.END_OF_STREAM;
                } else {
                    return inputBuffer.remaining();
                }
            } else {
                return underlyingInput.capacity();
            }
        }

        @Override
        public int position() {
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