public Collection<P> productionsOf(String name) {
		if (!productions.containsKey(name)) {
			return Collections.emptySet();
		}
		return productions.get(name);
	}
Get all productions where the left-hand side non-terminal has the given name

@param name the name of the non-terminal
@return all productions "defining" the named non-terminal
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/grammars/AbstractAssemblyGrammar.java