@Override
	public Address getExternalSpaceAddress() {
		return symbol.getAddress();
	}
Creates an externalLocationDB using a symbol
at the same external space address.
@param extMgr the ExternalManager.
@param symbol the memory (label or function) symbol for this external location.
Typically, this will store the original mangled name when and if the original name
is demangled, as well as the external program's memory address for the location if known.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/external/ExternalLocationDB.java