public Address getAddress() {
		return addr;
	}
Returns the address that the current view is focused on.

@return will return null if and only if the viewer does not currently
have a program. In other words, if a viewer has a program then it must
be able to associate a single "focus" address to any possible view it
can be in. The choice of address to use is, of course, up to each
implementing object.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ByteViewerState.java