@Override
	public String getStatusMsg() {
		return status;
	}
Creates a command for setting whether or not a reference is the primary reference.
If isPrimary is true, any other reference that was primary at that 
address will no longer be primary.
@param fromAddr the address of the codeunit making the reference.
@param opIndex the operand index.
@param toAddr the address being referred to.
@param isPrimary true to make the reference primary, false to make it non-primary
Ghidra/Features/Base/src/main/java/ghidra/app/cmd/refs/SetPrimaryRefCmd.java