@Override
	public void setFutureRegisterValue(Address address, RegisterValue value) {
		setFutureRegisterValue(Address.NO_ADDRESS, address, value);
	}
Sets the value for the given register to be used when the flow advances to the given address
using either the flowTo() or flowStart() methods.  The new value has precedence over any
existing value.

@param register the register for which the value is to be saved.
@param fromAddr the address from which this flow originated
@param toAddr the future flow address to save the value.
@param newValue the value to save for future flow.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/disassemble/DisassemblerContextImpl.java