public boolean isIsolated() {
		return typelock;
	}
If this returns true, the decompiler will not speculatively merge this with
other variables.
Currently, being isolated is equivalent to being typelocked.
@return true if this will not be merged with other variables
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/HighSymbol.java