@Override
	public boolean doAddressBreak(Address addr) {
		IteratorSTL<Pair<Address, BreakCallBack>> iter = addressCallback.find(addr);
		if (iter.isEnd()) {
			return false;
		}
		return iter.get().second.addressCallback(addr);
	}
This routine examines the address based container for any breakpoints associated with the
given address. If one is found, its addressCallback method is invoked.
@param addr is the address being checked for breakpoints
@return true if the breakpoint exists and returns true, otherwise return false
Ghidra/Framework/Emulation/src/main/java/ghidra/pcode/emulate/BreakTableCallBack.java