private boolean isFunctionFlagSet(byte functionFlagIndicator) {
		validate(manager.lock);
		FunctionDB localThunkFunc = thunkedFunction;
		if (localThunkFunc != null) {
			return localThunkFunc.isFunctionFlagSet(functionFlagIndicator);
		}
		byte flags = rec.getByteValue(FunctionAdapter.FUNCTION_FLAGS_COL);
		return ((flags & functionFlagIndicator) != 0);
	}
Determines whether the indicated function flag is set.

@param functionFlagIndicator
           the function flag from the FunctionAdapter class (i.e.
           FunctionAdapter.FUNCTION_VARARG_FLAG,
           FunctionAdapter.FUNCTION_INLINE_FLAG,
           FunctionAdapter.FUNCTION_NO_RETURN_FLAG)
@return true if the indicated flag is set
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/function/FunctionDB.java