public void setTypeLock(boolean typelock) {
		this.typelock = typelock;
	}
Set whether this symbol's data-type is considered "locked". If it is "locked",
this symbol's data-type is considered unchangeable during decompilation. The data-type
will be forced into the decompiler's model of the function to the extent possible.
@param typelock is true if the data-type should be considered "locked".
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/HighSymbol.java