src/it/unimi/dsi/fastutil/io/FastBufferedInputStream.java
protected boolean noMoreCharacters() throws IOException {
		if (avail == 0) {
			avail = is.read(buffer);
			if (avail <= 0) {
				avail = 0;
				return true;
			}
			pos = 0;
		}
		return false;
	}
protected boolean noMoreCharacters() throws IOException {
		if (avail == 0) {
			avail = is.read(buffer);
			if (avail <= 0) {
				avail = 0;
				return true;
			}
			pos = 0;
		}
		return false;
	}
Checks whether no more bytes will be returned.

<p>This method will refill the internal buffer.

@return true if there are no characters in the internal buffer and
the underlying reader is exhausted.