public void setParseConflict(Address conflictAddress, RegisterValue contextValue,
			Address flowFromAddress, String message) {
		instructionError =
			new InstructionError(this, contextValue, conflictAddress, flowFromAddress, message);
	}
Sets this block to have a PARSE conflict which means that the instruction parse failed
at the specified conflictAddress using the specified contextValue.  
@param conflictAddress the address of the exiting code unit that is preventing the instruction in this
block to be laid down.
@param contextValue the context-register value used during the failed parse attempt
@param flowFromAddress the flow-from instruction address or null
@param message - A message that describes the conflict to a user.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/lang/InstructionBlock.java