// double                 public ByteBuffer putDouble(double x) {            throw new ReadOnlyBufferException();     }     public ByteBuffer putDouble(int i, double x) {            throw new ReadOnlyBufferException();     }     public DoubleBuffer asDoubleBuffer() {        int size = this.remaining() >> 3;        int off = offset + position();        return (bigEndian                ? (DoubleBuffer)(new ByteBufferAsDoubleBufferRB(this,                                                                   -1,                                                                   0,                                                                   size,                                                                   size,                                                                   off))                : (DoubleBuffer)(new ByteBufferAsDoubleBufferRL(this,                                                                   -1,                                                                   0,                                                                   size,                                                                   size,                                                                   off)));    }                                           }

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