public void setStart(AssemblyNonTerminal nt) {
		setStartName(nt == null ? null : nt.getName());
	}
Change the start symbol for the grammar

@param nt the new start symbol
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/grammars/AbstractAssemblyGrammar.java