public synchronized int flushCache() {
		int res = -1;
		try {
			if ((decompProcess != null) && decompProcess.isReady()) {
				decompProcess.sendCommand("flushNative", stringResponse);
				return Integer.parseInt(stringResponse.toString());
			}
		}
		catch (IOException e) {
			// don't care
		}
		catch (DecompileException e) {
			// don't care
		}
		stopProcess();
		return res;
	}
Tell the decompiler to clear any function and symbol
information it gathered from the database.  Its a good
idea to call this after any decompileFunction call,
as the decompile process caches and reuses this kind
of data, and there is no explicit method for keeping
the cache in sync with the data base. Currently the
return value has no meaning.
@return -1
Ghidra/Features/Decompiler/src/main/java/ghidra/app/decompiler/DecompInterface.java