@Override
	public int available() throws IOException {
		return in.available();
	}
Returns the number of bytes that can be read from this input 
stream without blocking. 
<p>
This method
simply performs <code>in.available()</code> and
returns the result.

@return     the number of bytes that can be read from the input stream
            without blocking.
@exception  IOException  if an I/O error occurs.
Ghidra/Framework/Generic/src/main/java/ghidra/util/MonitoredInputStream.java