Transfers this buffer's data to the specified destination starting at
the current {@code readerIndex} and increases the {@code readerIndex}
by the number of the transferred bytes (= {@code dst.length}).
@throws IndexOutOfBoundsException
if {@code dst.length} is greater than {@code this.readableBytes}
Transfers this buffer's data to the specified destination starting at the current {@code readerIndex} and increases the {@code readerIndex} by the number of the transferred bytes (= {@code dst.length}).
@throws IndexOutOfBoundsException if {@code dst.length} is greater than {@code this.readableBytes}