public void combine(AbstractAssemblyGrammar<NT, P> that) {
		for (P prod : that.prodList) {
			addProduction(prod);
		}
	}
Add all the productions of a given grammar to this one

@param that the grammar whose productions to add
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/grammars/AbstractAssemblyGrammar.java